Saying Yes and No in Welsh

(edited 5 Sep 2017 v4) (Please let us know if you can correct or improve the logic.)

For those of you still near the beginning of the course, this will probably look a bit scary. Don't be put off - it may not help you much yet, so you may want to keep a copy or leave it for now and come back later...

For those of you who have got a reasonable way through the course, you will have found that the Welsh answering system looks complex compared to English. However, the underlying logic is not too hard - applying it in conversation is what needs a lot of practice.

For the general colloquial language (but leaving out various dialect variations and slang), the Welsh answering system for 'yes/no' can be summed up by working through the following sequence, stopping when you reach the stage that matches the particular question:

  1. Any emphatic question (that is, a question that does not start with a verb) is answered with ie (yes) or nage (no). If that does not apply then,
  2. A simple past tense question is answered with do (yes) or naddo (no). If that does not apply then,
  3. A question using a form of bod is answered with the related form of bod from the same tense. (A very wide class of questions and answers!) If that does not apply then,
  4. A question based on short forms of gwneud and cael, the conditional of hoffi/licio and gallu/medru, and perhaps a couple of others in especially common use, is answered with a form of the same verb from the same tense. If that does not apply then,
  5. The rest, which will be questions based on short-form future forms of verbs, can be answered with future forms of gwneud.

Remember that with any answer, the pronouns are usually excluded.

So, following the logic:

  • (1) Meddyg yw e? - Ie/Nage (emphatic)
  • (1) Dewi Lingo sy 'na? - Ie/Nage (emphatic)
  • (1) Gyda Sioned aeth e i'r parti? - Ie/Nage (emphatic)
  • (2) Est ti i'r dref ddoe? - Do/Naddo (simple past)
  • (2) Gaeth y lladron eu harestio wythnos diwethaf? - Do/Naddo (simple past)
  • (3) Wyt ti'n mynd allan? - Ydw/Nac ydw (form of bod)
  • (3) Wyt ti wedi bod yn Sbaen erioed? - Ydw/Nac ydw (form of bod)
  • (3) Fasen nhw'n mynd i'r Eisteddfod? - Basen/Na fasen (form of bod)
  • (3) Fydd hi'n oer yfory? - Bydd/Na fydd (form of bod)
  • (3) O't ti'n gweithio yn y Fenni? - O'n/Nac o'n (form of bod)
  • (3) Oedd Dewi wedi clywed y Super Furries cyn neithiwr? - Oedd/Nac oedd (form of bod)
  • (3) Oes teigr yn yr ardd? - Oes/Nac oes (form of bod)
  • (4) Wnewch chi'r cinio heno? - Gwna/Na wna (form of gwneud)
  • (4) Wnei di werthu dy hen gar yfory? - Gwna/Na wna (form of gwneud)
  • (4) Ga i baned, plîs? - Cei/Na chei; Cewch/Na chewch (form of cael)
  • (4) Hoffet ti goffi? - Hoffwn/Na hoffwn (conditional of hoffi)
  • (4) Allai'r mecanig 'na drwsio fy nghar? - Gallai/Na allai (conditional of gallu)
  • (5) Ei di i'r llyfrgell yfory? Gwna/Na wna (short-form future)
  • (5) Ddewch chi gyda ni yfory? Gwnawn/Na wnawn (short-form future)
  • (5) Brynan nhw gar newydd yfory? - Gwnân/Na wnân (short form future)
  • (5) Werthi di dy hen gar cyn mis Mai? - Gwna/Na wna (short-form future)

If you get lost in a live conversation, just go with ie/nage or do/naddo - people will understand you perfectly well. Or just avoid a direct 'yes/no' answer altogether, which is very common in day-to-day conversation anyway. Dych chi'n mwynhau dysgu Cymraeg? Wrth gwrs!

August 14, 2017


Useful to know considering I'm moving to Wales soon. Diolch yn fawr!

January 24, 2018

This is a very useful summary. Diolch yn fawr.

August 21, 2017

Welsh is easy and I love it !! Diolch yn fawr iawn am gyngor yr iaith Gymraeg . :)

December 14, 2017

Diolch yn fawr iawn. It is so useful

August 28, 2017

Diolch yn fawr. :)

December 21, 2017

Diolch, mae hyn yn helpu lot.

November 25, 2017

Very useful. I'm getting to that point where I'm finding it tricky to keep straight. This makes it clearer. Diolch!

December 2, 2018

Diolch yn fawr. Mae hynny'n ddefnyddiol iawn.

September 15, 2017

Diolch yn fawr!

February 7, 2018


June 21, 2018

Diolch yn fawr iawn. So clear!

February 17, 2019

Mae hynny'n helpu. Diolch

February 22, 2019


April 18, 2019
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