Singular
NOMINATIVE
fosaoideach (MASC.)
fhosaoideach (FEM.)
GENITIVE
fhosaoidigh (MASC.)
fosaoidí (FEM.)
Plural
NOMINATIVE
fosaoideacha
fhosaoideacha (SLENDER CONSONANTS)
GENITIVE
fosaoideacha (STRONG PLURALS)
fosaoideach (WEAK PLURALS)
Other forms
COMPARATIVE
níos fosaoidí
▪ní b'fhosaoidí
SUPERLATIVE
is fosaoidí
▪ab fhosaoidí