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costly

adjective (EXPENSIVE)
 
 
/ˈkɒst.li/ US  /ˈkɑːst-/

Definition

expensive: a costly item a costly purchasedisapproving The project was subject to several costly delays/setbacks.Expensive and luxuriousCosting too muchCosting too muchExpensive and luxurious costliness
 
 
/-nəs/ noun [U]
Costing too muchExpensive and luxuriousExpensive and luxuriousCosting too much
(Definition of costly adjective (EXPENSIVE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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