Singular
NOMINATIVE
fiothnaiseach (MASC.)
fhiothnaiseach (FEM.)
GENITIVE
fhiothnaisigh (MASC.)
fiothnaisí (FEM.)
Plural
NOMINATIVE
fiothnaiseacha
fhiothnaiseacha (SLENDER CONSONANTS)
GENITIVE
fiothnaiseacha (STRONG PLURALS)
fiothnaiseach (WEAK PLURALS)
Other forms
COMPARATIVE
níos fiothnaisí
▪ní b'fhiothnaisí
SUPERLATIVE
is fiothnaisí
▪ab fhiothnaisí
