Cymraeg · Treigladau
Initial consonant mutation is a hallmark of Celtic linguistics. Words systematically alter their opening consonant based on what precedes them—whether possessive pronouns, prepositions, numbers, or grammatical gender.
| Radical (Base) | Mutated Form | Blocked Exceptions |
|---|---|---|
| c | g | None |
| p | b | None |
| t | d | None |
| g | None | |
| b | f | None |
| d | dd | None |
| m | f | None |
| ll | l | None |
| rh | r | None |
| ts | ts | None |
| Radical (Base) | Mutated Form | Blocked Exceptions |
|---|---|---|
| c | ngh | None |
| p | mh | None |
| t | nh | None |
| g | ng | None |
| b | m | None |
| d | n | None |
| Radical (Base) | Mutated Form | Blocked Exceptions |
|---|---|---|
| c | ch | None |
| p | ph | None |
| t | th | None |
| vowel | h | None |
| Radical (Base) | Mutated Form | Blocked Exceptions |
|---|---|---|
| vowel | h | None |
The following words and grammatical contexts trigger consonant mutations in Welsh:
predicate marker (triggers treiglad meddal)
the (with feminine singular noun, triggers treiglad meddal)
adjective after feminine singular noun (triggers treiglad meddal)
your (informal, triggers treiglad meddal)
to (triggers treiglad meddal)
on (triggers treiglad meddal)
for / about (triggers treiglad meddal)
from / of (triggers treiglad meddal)
by / with (triggers treiglad meddal)
in (triggers treiglad trwynol)
my (triggers treiglad trwynol)
with / and (triggers treiglad llaes)
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