Singular
NOMINATIVE
trídhuilleach (MASC.)
thrídhuilleach (FEM.)
GENITIVE
thrídhuilligh (MASC.)
trídhuillí (FEM.)
Plural
NOMINATIVE
trídhuilleacha
thrídhuilleacha (SLENDER CONSONANTS)
GENITIVE
trídhuilleacha (STRONG PLURALS)
trídhuilleach (WEAK PLURALS)
Other forms
COMPARATIVE
níos trídhuillí
▪ní ba thrídhuillí
SUPERLATIVE
is trídhuillí
▪ba thrídhuillí