[ kawst-lee, kost- ]
/ ˈkɔst li, ˈkɒst- /
adjective, cost·li·er, cost·li·est.
costing much; expensive; high in price: a costly emerald bracelet; costly medical care.
resulting in great expense: The upkeep of such a large house is costly.
resulting in great detriment: It was a costly mistake because no one ever trusted him again.
of great value; very valuable; sumptuous.
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Origin of costly
synonym study for costly
1. See expensive.
OTHER WORDS FROM costlycost·li·ness, nouno·ver·cost·li·ness, nouno·ver·cost·ly, adjectiveun·cost·ly, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for costly
British Dictionary definitions for costly
/ (ˈkɒstlɪ) /
adjective -lier or -liest
of great price or value; expensive
entailing great loss or sacrificea costly victory
Derived forms of costlycostliness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012