Singular
NOMINATIVE
feifeach (MASC.)
fheifeach (FEM.)
GENITIVE
fheifigh (MASC.)
feifí (FEM.)
Plural
NOMINATIVE
feifeacha
fheifeacha (SLENDER CONSONANTS)
GENITIVE
feifeacha (STRONG PLURALS)
feifeach (WEAK PLURALS)
Other forms
COMPARATIVE
níos feifí
▪ní b'fheifí
SUPERLATIVE
is feifí
▪ab fheifí