From Old Irish cathaisech (“vigilant; noisy”). By surface analysis, cathais (“vigil, watch”) + -ach. Compare Cathasach (name).
cathaiseach (genitive singular masculine cathaisigh, genitive singular feminine cathaisí, plural cathaiseacha, comparative cathaisí)
cathaiseach (genitive singular masculine cathaisigh, genitive singular feminine cathaisí, plural cathaiseacha, comparative cathaisí)
singular | plural (m/f) | |||
---|---|---|---|---|
Positive | masculine | feminine | (strong noun) | (weak noun) |
nominative | cathaiseach | chathaiseach | cathaiseacha; chathaiseacha2 | |
vocative | chathaisigh | cathaiseacha | ||
genitive | cathaisí | cathaiseacha | cathaiseach | |
dative | cathaiseach; chathaiseach1 |
chathaiseach; chathaisigh (archaic) |
cathaiseacha; chathaiseacha2 | |
Comparative | níos cathaisí | |||
Superlative | is cathaisí |
1 When the preceding noun is lenited and governed by the definite article.
2 When the preceding noun ends in a slender consonant.
radical | lenition | eclipsis |
---|---|---|
cathaiseach | chathaiseach | gcathaiseach |
Note: Certain mutated forms of some words can never occur in standard Modern Irish.
All possible mutated forms are displayed for convenience.