Singular
NOMINATIVE
fonóideach (MASC.)
fhonóideach (FEM.)
GENITIVE
fhonóidigh (MASC.)
fonóidí (FEM.)
Plural
NOMINATIVE
fonóideacha
fhonóideacha (SLENDER CONSONANTS)
GENITIVE
fonóideacha (STRONG PLURALS)
fonóideach (WEAK PLURALS)
Other forms
COMPARATIVE
níos fonóidí
▪ní b'fhonóidí
SUPERLATIVE
is fonóidí
▪ab fhonóidí