TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: achosi neu ganiatáu marwolaeth neu niwed corfforol difrifol i blentyn neu berson agored i niwed
English: causing or allowing death or serious physical harm of child or vulnerable person
Status B
Subject: Law
Part of speech: Verb
Notes: Teitl ar drosedd
Last updated: 27 November 2025
Welsh: achosi niwed corfforol drwy yrru’n ddireol neu’n wyllt
English: causing bodily harm by wanton or furious driving
Status B
Subject: Law
Part of speech: Verb
Notes: Trosedd o dan Ddeddf Troseddau yn Erbyn y Person 1861. Fe’i defnyddir o bryd i’w gilydd pan na fydd troseddau gyrru eraill, mwy cyffredin, yn gymwys (ee os yw’r drosedd wedi digwydd oddi ar ffyrdd cyhoeddus).
Last updated: 22 June 2023
Welsh: achosi ofn, dychryn neu ofid i'r cyhoedd
English: public fear, alarm or distress
Status B
Subject: Law
Part of speech: Verb
Notes: Teitl ar drosedd
Last updated: 27 November 2025
Welsh: achosi ofn, dychryn neu ofid i'r cyhoedd, wedi'i waethygu gan hiliaeth neu grefydd
English: racially or religiously aggravated public fear, alarm or distress
Status B
Subject: Law
Part of speech: Verb
Notes: Teitl ar drosedd
Last updated: 27 November 2025
Welsh: actus reus neu weithred droseddol
English: actus reus or guilty act
Status B
Subject: Justice and order
Last updated: 2 August 2012
Welsh: adeiladau atodol neu nas defnyddir
English: ancillary or unused buildings
Status B
Subject: Tourism and leisure
Part of speech: Noun, Plural
Notes: Teitl swyddogol a ddefnyddir yng Nghynllun Parciau Gwyliau Graddedig Prydain.
Last updated: 24 October 2016
Welsh: adnewyddu neu barhau tenantiaeth warchodedig
English: renewal or continuance of a protected tenancy
Status A
Subject: Housing
Last updated: 7 March 2018
Welsh: Adrodd ar Achosion o Gamymddwyn neu Anghymhwystra Proffesiynol yn y Gwasanaeth Addysg
English: Reporting Cases of Misconduct or Professional Incompetence in the Education Service
Status A
Subject: Education
Part of speech: Verb
Definition: Published by National Assembly for Wales, December 2005.
Last updated: 29 November 2005
Welsh: aflonyddu wedi'i waethygu gan hiliaeth neu grefydd
English: racially or religiously aggravated harassment
Status B
Subject: Law
Part of speech: Verb
Notes: Teitl ar drosedd
Last updated: 27 November 2025
Welsh: aflonyddwch, braw neu drallod
English: harassment, alarm or distress
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Last updated: 31 July 2012
Welsh: afresymegol neu wrthnysig
English: irrational or perverse
Status C
Subject: Law
Part of speech: Adjective
Last updated: 11 October 2004
Welsh: afresymol neu anghymesur
English: unreasonable or disproportionate
Status C
Subject: Law
Part of speech: Adjective
Context: Mesur Arfaethedig y Gymraeg.
Last updated: 1 September 2010
Welsh: anawsterau a/neu anableddau dysgu
English: learning difficulties and/or disabilities
Status A
Subject: Health
Part of speech: Noun, Plural
Definition: LDD
Notes: Gweler yr erthygl ar y Model Cymdeithasol o Anabledd yn yr Arddulliadur. Nid yw’r defnydd o “anabledd” yn y term cyffredin “anabledd dysgu” yn gyson â’r Model Cymdeithasol, gan ei fod yn cyfeirio at amhariad yn hytrach nag at rwystrau sy’n anablu pobl. Fodd bynnag mae Llywodraeth Cymru’n derbyn mai dyma’r eirfa sy’n arferol ym maes anabledd dysgu, ac a ffefrir gan sefydliadau cynrychioladol yn y maes ar hyn o bryd, felly fe’i defnyddir gan Lywodraeth Cymru. Adolygir hyn yn gyson. 
Last updated: 24 November 2023
Welsh: anifeiliaid gwyllt/moch daear wedi'u hanafu neu'u lladd ar y ffyrdd
English: RTA
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Definition: road traffic accident
Last updated: 18 February 2005
Welsh: anifeiliaid sy’n cael eu cadw, eu pesgi neu eu magu i gynhyrchu bwyd
English: animals which are kept, fattened or bred for the production of food
Status B
Subject: Animals
Part of speech: Noun, Plural
Last updated: 29 July 2003
Welsh: anwir neu gamarweiniol
English: false or misleading
Status B
Subject: Justice and order
Part of speech: Adjective
Last updated: 14 August 2012
Welsh: anwir neu gamarweiniol mewn modd perthnasol
English: false or misleading in a material respect
Status A
Subject: Law
Part of speech: Adjective
Context: Mae person yn cyflawni trosedd os yw’r person yn gwneud unrhyw un neu ragor o’r canlynol at ddiben achosi penderfyniad penodol ar gais am dystysgrif cyfreithlondeb neu apêl o dan adran 6 (pa un a wneir y cais neu’r apêl gan y person hwnnw neu gan unrhyw berson arall): (a) gwneud yn fwriadol neu’n ddi-hid ddatganiad sy’n anwir neu’n gamarweiniol mewn modd perthnasol [...]
Notes: Gellir defnyddio'r ymadrodd hwn fel un adferfol hefyd.
Last updated: 5 March 2024
Welsh: arafu neu atal llwybr llygru
English: mitigating pollution pathway
Status C
Subject: Agriculture
Part of speech: Verb
Last updated: 20 January 2010
Welsh: arfer unrhyw bŵer, hawl neu rwymedi
English: arfer unrhyw bŵer, hawl neu rwymedi
Status B
Subject: Law
Part of speech: Verb
Last updated: 18 June 2020
Welsh: Arweiniad ar Gyfer Ymchwilio i Honiadau o Gam-drin yn erbyn Pobl Broffesiynol neu Ofalwyr yng Nghyd-destun Plant y Gofelir Amdanynt
English: Practice Guide to Investigate Allegations of Abuse Against a Professional or Carer in Relation to Children Looked After
Status A
Subject: Social services
Part of speech: Noun, Masculine, Singular
Definition: dogfen y Cynulliad
Last updated: 24 October 2003
Welsh: Asesiad o Adeiladau o Ddiddordeb Hanesyddol neu Bensaernïol Eithriadol
English: Assessment of Buildings of Outstanding Historic or Architectural Interest
Status C
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 3 November 2003
Welsh: Asiaidd neu Asiaidd Prydeinig
English: Asian or Asian British
Status A
Subject: Personnel
Part of speech: Adjective
Definition: ethnic group used in 2001 Census
Last updated: 26 April 2005
Welsh: asiant sy'n gosod neu'n rheoli tai
English: letting/managing agent
Status C
Subject: Housing
Part of speech: Noun, Masculine, Singular
Last updated: 6 July 2012
Welsh: ategu neu gysgodi dros dro
English: temporary support or shelter
Status A
Subject: Estates and Cadw
Part of speech: Verb
Definition: Defnyddio strwythur i gynnal adeilad yn ffisegol, neu ei warchod rhag y tywydd, am gyfnod byr.
Notes: Yn benodol mewn perthynas â chynnal gwaith ar heneb neu adeilad rhestredig.
Last updated: 3 February 2022
Welsh: Atodiad cyn-aelod o’r Gurkhas neu unedau milwrol Hong Kong a ryddhawyd cyn 1 Gorffennaf 1997
English: Appendix Gurkha and Hong Kong military unit veteran discharged before 1 July 1997
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Definition: Atodiad o Reolau Mewnfudo’r Deyrnas Unedig sy’n ymwneud â phobl a wasanaethodd yn y Gurkhas neu unedau milwrol Hong Kong ac a ryddhawyd cyn 1 Gorffennaf 1997, gan gynnwys darpariaethau ar gyfer partneriaid sydd wedi cael profedigaeth.
Last updated: 23 October 2025
Welsh: Atodiad i’r Rheolau Mewnfudo: Caniatâd Dros Dro i Aros i Ddioddefwyr y Fasnach mewn Pobl neu Gaethwasiaeth
English: Appendix Temporary Permission to Stay for Victims of Human Trafficking or Slavery of the Immigration Rules
Status B
Subject: Law
Part of speech: Noun, Masculine, Singular
Last updated: 25 November 2022
Welsh: Bihafiwch neu cewch eich banio
English: Behave or be Banned
Status C
Subject: Justice and order
Part of speech: Verb
Definition: BOBB
Last updated: 25 June 2007
Welsh: Bihafiwch neu cewch eich banio
English: BOBB
Status C
Subject: Justice and order
Part of speech: Verb
Definition: Behave or be Banned
Last updated: 3 September 2008
Welsh: boeler sefydlog neu gyfarpar diwydiannol sefydlog
English: fixed boiler or industrial plant
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 26 January 2023
Welsh: Braster ac Olew Llysiau Sefydlog Amrwd, wedi’u Puro neu wedi'u Ffracsiynu
English: Fixed Vegetable Fats and Oils, Crude, Refined, Fractionated
Status B
Subject: Food
Part of speech: Proper noun
Notes: Categori cynnyrch yn y Dosbarthiad Safonol Masnach Ryngwladol (SITC).
Last updated: 3 December 2025
Welsh: bygythiad neu feddiant gyda'r bwriad o gyflawni difrod troseddol
English: threat or possession with intent to commit criminal damage
Status B
Subject: Law
Part of speech: Noun, Masculine, Singular
Notes: Teitl ar drosedd
Last updated: 27 November 2025
Welsh: camdriniaeth neu esgeulustod bwriadol
English: ill-treatment or wilful neglect
Status A
Subject: Justice and order
Part of speech: Noun, Feminine, Singular
Last updated: 26 March 2014
Welsh: camdriniaeth neu esgeulustod bwriadol neu ddi-hid
English: wilful or reckless neglect or mistreatment
Status A
Subject: Justice and order
Part of speech: Noun, Feminine, Singular
Last updated: 29 April 2014
Welsh: caniatáu neu wrthod cofrestriad
English: grant or refusal of registration
Status A
Subject: Social services
Part of speech: Verb
Context: Caniatáu neu wrthod cofrestriad fel darparwr gwasanaeth plant o dan gyfyngiad
Last updated: 10 July 2024
Welsh: Canllawiau Arfer Da i ddarparu gwasanaethau ar gyfer Plant a Phobl Ifanc sy'n defnyddio neu'n camddefnyddio sylweddau yng Nghymru
English: Guidance on Good Practice for the provision of services for Children and, Younger People who Use or Misuse Substances in Wales
Status A
Subject: Social services
Part of speech: Noun, Plural
Definition: Cyhoeddwyd gan Lywodraeth Cynulliad Cymru, 2008.
Last updated: 26 August 2008
Welsh: Canllawiau ar gyfer gofalu am y meirw sydd ag achosion tybiedig neu a gadarnhawyd o goronafeirws
English: Guidance for care of the deceased with suspected or confirmed coronavirus
Status B
Subject: Health
Part of speech: Noun, Plural
Notes: Dogfen a gyhoeddwyd gan Lywodraeth y DU.
Last updated: 28 April 2020
Welsh: Canllaw i Reoliadau Deddf Tir Comin 2006 (Cywiro, Tir Comin Heb ei Gofrestru neu Dir Comin a Gam-gofrestrwyd) 2017: Canllawiau i Ymgeiswyr
English: Guide to the Commons Act 2006 (Correction, Non-Registration or Mistaken Registration) (Wales) Regulations 2017: Guidance for applicants
Status A
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 27 April 2017
Welsh: cawell cregyn moch (gorweddog neu hunanadeiledig)
English: whelk pot (laid down or self-manufactured)
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 28 May 2014
Welsh: ceffyl neu garcas hysbysedig
English: notified horse or carcase
Status A
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 10 June 2013
Welsh: Cemegol, Biolegol, Radiolegol neu Niwclear
English: CBRN
Status C
Subject: Environment
Definition: Chemical, Biological, Radiological or Nuclear
Last updated: 10 January 2007
Welsh: Cemegol, Biolegol, Radiolegol neu Niwclear
English: Chemical, Biological, Radiological or Nuclear
Status C
Subject: Environment
Part of speech: Adjective
Definition: CBRN
Last updated: 10 January 2007
Welsh: clefyd ar y galon neu'r ysgyfaint
English: cardiac or pulmonary disease
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 25 June 2020
Welsh: costau mewn nwyddau (ac/neu mewn wasanaethau) ac arian cyfatebol
English: in-kind costs and match funding
Status A
Subject: Finance and statistics
Part of speech: Noun, Plural
Last updated: 16 May 2007
Welsh: cwynion blinderus neu faleisus
English: vexatious or malicious complaints
Status C
Subject: Law
Part of speech: Noun, Plural
Last updated: 30 November 2007
Welsh: cwyn wacsaw neu flinderus
English: frivolous or vexatious complaint
Status C
Subject: Law
Part of speech: Noun, Feminine, Singular
Context: Mesur Arfaethedig y Gymraeg.
Last updated: 1 September 2010
Welsh: cyffuriau peryglus neu niweidiol
English: dangerous or otherwise harmful drugs
Status C
Subject: Health
Part of speech: Noun, Plural
Last updated: 30 July 2010
Welsh: cymorth mordwyo neu awyrlywio
English: aid to navigation by water or air
Status C
Subject: Law
Part of speech: Noun, Masculine, Singular
Last updated: 19 October 2011
Welsh: cynnyrch cig wedi ei siapio neu ei ffurfio
English: shaped or formed meat product
Status B
Subject: Food
Part of speech: Noun, Masculine, Singular
Plural: cynhyrchion cig wedi eu siapio neu eu ffurfio
Last updated: 3 December 2025
Welsh: cynyddu (neu leihau) cyfran eu perchentyaeth
English: staircasing
Status B
Subject: Housing
Part of speech: Verb
Definition: Mae cwsmeriaid yn cael lleihau neu gynyddu maint y gyfran yn eu cartref y maent yn ei brynu o’r gymdeithas tai.
Last updated: 10 March 2016
Welsh: cyrraedd neu groesi’r trothwy pwyntiau
English: meet or exceed the point threshold
Status C
Subject: Agriculture
Part of speech: Verb
Last updated: 13 July 2010