Cythruddo - To annoy , To provoke
In the sample sentence above on this page you will observe that the spelling of one word ( ddieflig ) differs from the spelling on the relevant Geiriadur listing page Dieflig - Devilish,Fiendish,Unholy,Vicious . 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:-
The three links above will take you to further information on Wikipedia 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?
PRESENT TENSE - AFFIRMATIVE
Dwi'n cythruddo - I am annoying
Wyt ti'n cythruddo - You are annoying (familiar)
Mae e'n cythruddo / Mae hi'n cythruddo - He / She is annoying
Dyn ni'n cythruddo - We are annoying
Dych chi'n cythruddo - You (plural) are annoying (also singular formal)
Maen nhw'n cythruddo - They are annoying
PRESENT TENSE - NEGATIVE
Dwi ddim yn cythruddo - I am not annoying
Dwyt ti ddim yn cythruddo - You are not annoying (familiar)
Dydy e ddim yn cythruddo / Dydy hi ddim yn cythruddo - He / She is not annoying
Dyn ni ddim yn cythruddo - We are not annoying
Dych chi ddim yn cythruddo - You (plural) are not annoying (also singular formal)
Dyn nhw ddim yn cythruddo - They are not annoying
PRESENT TENSE - INTERROGATIVE
Ydw i'n cythruddo? - Am I annoying?
Wyt ti'n cythruddo? - Are you annoying? (familiar)
Ydy e'n cythruddo / Ydy hi'n cythruddo? - Is he / Is she annoying?
Ydyn ni'n cythruddo? - Are we annoying?
Ydych chi'n cythruddo? - Are you (plural) annoying? (also singular formal)
Ydyn nhw'n cythruddo? - Are they annoying?
QUESTION - ’NO / YES’ REPLIES
Ydw i'n cythruddo? - (Nac) Wyt / (Ydych - formal)
Wyt ti'n cythruddo? - (Nac) Ydw
Ydy e'n cythruddo / Ydy hi'n cythruddo? - (Nac) Ydy
Ydyn ni'n cythruddo? - (Nac) Ydyn / Ydych
Ydych chi'n cythruddo? - (Nac) Ydyn / (Ydw - formal)
Ydyn nhw'n cythruddo? - (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.