Definition of “costly” - English Dictionary

“costly” in American English

See all translations

costlyadjective

us /ˈkɔs·tli/

costly adjective (MAKING YOU SPEND MONEY)

expensive:

This procedure can be very costly.

costly adjective (MAKING YOU GIVE OR LOSE SOMETHING)

done by making you give or lose something of value:

Her costly mistake allowed the opponents to score.

(Definition of “costly” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“costly” in Business English

See all translations

costlyadjective

uk /ˈkɒstli/ us

costing a lot of money:

costly repairs
The delays in the schedule proved very costly.

harmful, and involving a lot of loss or damage:

Their failure to consult staff members was a costly mistake.

(Definition of “costly” from the Cambridge Business English Dictionary © Cambridge University Press)