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If you are ready to commit to a full time course we recommend the following options:

AmeriCymraeg This is an online course with tutor John Good, which is offered in two-month terms. Go here for more information and to register: AmeriCymraeg

SSIW Want to learn quickly? Then you might want to check out the SSIW High Intensity Language Program here: SSIW

Online Welsh language course





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Ymddwyn - To act, To behave

  • Croeseiriau Cymraeg : click here

  • ymddwyn - to act, to behave

    sample sentences:

    Dai...wyt ti'n ymddwyn fel babi . - Dai are behaving like a baby!
    Dim cwrw yn y pram !!
    - No beer in the pram!

    Image: Ymddwyn



    Dwi'n ymddwyn - I am behaving

    Wyt ti'n ymddwyn - You are behaving (familiar)

    Mae e'n ymddwyn / Mae hi'n ymddwyn - He / She is behaving

    Dyn ni'n ymddwyn - We are behaving

    Dych chi'n ymddwyn - You (plural) are behaving (also singular formal)

    Maen nhw'n ymddwyn - They are behaving




    Dwi ddim yn ymddwyn - I am not behaving

    Dwyt ti ddim yn ymddwyn - You are not behaving (familiar)

    Dydy e ddim yn ymddwyn / Dydy hi ddim yn ymddwyn - He / She is not behaving

    Dyn ni ddim yn ymddwyn - We are not behaving

    Dych chi ddim yn ymddwyn - You (plural) are not behaving (also singular formal)

    Dyn nhw ddim yn ymddwyn - They are not behaving




    Ydw i'n ymddwyn? - Am I behaving?

    Wyt ti'n ymddwyn? - Are you behaving? (familiar)

    Ydy e'n ymddwyn / Ydy hi'n ymddwyn? - Is he / Is she behaving?

    Ydyn ni'n ymddwyn? - Are we behaving?

    Ydych chi'n ymddwyn? - Are you (plural) behaving? (also singular formal)

    Ydyn nhw'n ymddwyn? - Are they behaving?




    Ydw i'n ymddwyn? - (Nac) Wyt / (Ydych - formal)

    Wyt ti'n ymddwyn? - (Nac) Ydw

    Ydy e'n ymddwyn / Ydy hi'n ymddwyn? - (Nac) Ydy

    Ydyn ni'n ymddwyn? - (Nac) Ydyn / Ydych

    Ydych chi'n ymddwyn? - (Nac) Ydyn / (Ydw - formal)

    Ydyn nhw'n ymddwyn? - (Nac) Ydyn


    N.B. 'Wyt ti' is the familiar form of the 2nd person and should be used only when addressing close friends, family members and animals. 'Dych chi' is the polite form and should be used in all other instances.