costosas

expensive

k o s ˈt o s a s → costoso

costos expensive, costly + as feminine plural

adjective · feminine plural Rare #45,980

expensive Feminine plural form.

SP: Las reparaciones fueron muy costosas.

EN: The repairs were very expensive.

Forms of costoso

	Masculine	Feminine
Singular	—	costosa
Plural	costosos	costosas

Come algunas costosas vitaminas.

Eat some expensive vitamins.

— Такси-блюз (1990)

Las casas grandes son costosas para vivir.

Large houses are expensive to live in.

Son armas muy especiales y muy costosas.

They are very special and very expensive weapons.

— Jojo Rabbit (2019)

Las frutillas son costosas en el invierno.

Strawberries are expensive in the winter.

Sounds similar to

costosos k o s ˈt o s o s