This resource is provided by AmeriCymru and is intended for Welsh learners who are not yet ready to commit to a full time course. With Croeseiriau Cymraeg you can devise your own schedule and learn at your own pace. Before you start please go to this page: Croeseiriau Cymraeg and read the 'Introduction' and 'How to Use' sections.

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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Gair - Word

  • gair - word   geiriau - words n.m.

    sample sentence:  Dwi'n dysgu geiriau ac ymadroddion newydd bob dydd ( I'm learning new words and phrases every day )

    Image: Geiriau

  • When to use 'a' or 'ac' for 'and' in Welsh?

    There are two forms of the word 'and' in Welsh. They do not differ in meaning. The two forms are:-



    Use ‘a’ when the next word starts with a consonant.

    Brawd a chwaer - brother and sister

    Dydd a nos - day and night

    Use ‘ac’ when the next word starts with a vowel. The Welsh vowels are:- a, e, i, o, u, w, y

    Misoedd ac wythnosau - months and weeks

    Banana ac afal - banana and apple

    Some Welsh words use 'a' before them and not 'ac' even though they start with a consonant. We have not listed the exceptions to the above rule here as it is probably easier to acquaint yourself with them as you go along.


    mutant.jpg In the sample sentence above on this page you will observe that the spelling of one word ( bob ) differs from the spelling on the relevant Geiriadur listing page ( Pob - All, Each, Every ). Be not alarmed!

    This happens because:-

    "Welsh, as with all other Celtic languages, often sees changes made to the beginning of words depending on the word that precedes it, or the role it plays in the sentence. These changes are known as "mutations", of which Welsh has three distinct types. Common situations in which a mutation may occur are when a word follows a preposition, possessive, or number."

    The three types of mutation are:-

    Soft Mutation

    Nasal Mutation

    Aspirate Mutation

    The three links above will take you to further information about these commonly occurring mutations.

    Most Welsh courses and teachers advise students not to worry too much about this at the outset. Fluent speakers will understand you if you forget to mutate a letter. With practice this will come naturally and there is perhaps, no need for beginning learners to make a conscious effort to apply these rules.

    However, if you wish to acquaint yourself with the rules early on you could look out for the 'Mutant Alert' notice on the vocabulary pages and use these as an opportunity to refresh your knowledge by checking the above links.

    Spot the Mutation: The mutation above is an example of a ........... mutation?