costasach

Irish

Alternative forms

costaiseach

Etymology

From costas (“cost, expense”) +‎ -ach.

Adjective

costasach (genitive singular masculine costasaigh, genitive singular feminine costasaí, plural costasacha, comparative costasaí)

costly, expensive; sumptuous
Synonyms: costasúil, daor

Declension

Declension of *costasach*
	singular		plural (m/f)
Positive	masculine	feminine	(strong noun)	(weak noun)
nominative	costasach	chostasach	costasacha; chostasacha²
vocative	chostasaigh	chostasach	costasacha
genitive	chostasaigh	costasaí	costasacha	costasach
dative	costasach; chostasach¹	chostasach; chostasaigh (archaic)	costasacha; chostasacha²
Comparative	níos costasaí
Superlative	is costasaí

¹ When the preceding noun is lenited and governed by the definite article.
² When the preceding noun ends in a slender consonant.

Related terms

costasúlacht, costasacht (“costliness; sumptuousness”)

Mutation

Mutated forms of *costasach*
radical	lenition	eclipsis
costasach	chostasach	gcostasach

Note: Certain mutated forms of some words can never occur in standard Modern Irish.
All possible mutated forms are displayed for convenience.