Singular
NOMINATIVE
forthréan (MASC.)
fhorthréan (FEM.)
GENITIVE
fhorthréin (MASC.)
forthréine (FEM.)
Plural
NOMINATIVE
forthréana
fhorthréana (SLENDER CONSONANTS)
GENITIVE
forthréana (STRONG PLURALS)
forthréan (WEAK PLURALS)
Other forms
COMPARATIVE
níos forthréise
▪ní b'fhorthréise
SUPERLATIVE
is forthréise
▪ab fhorthréise