Try Our Apps
Dictionary.com

follow Dictionary.com

The Best Internet Slang

costly

[kawst-lee, kost-] /ˈkɔst li, ˈkɒst-/
adjective, costlier, costliest.
1.
costing much; expensive; high in price:
a costly emerald bracelet; costly medical care.
2.
resulting in great expense:
The upkeep of such a large house is costly.
3.
resulting in great detriment:
It was a costly mistake because no one ever trusted him again.
4.
of great value; very valuable; sumptuous.
5.
lavish; extravagant.
Origin of costly
1350-1400
First recorded in 1350-1400, costly is from the Middle English word costli. See cost, -ly
Related forms
costliness, noun
overcostliness, noun
overcostly, adjective
uncostly, adjective
Synonyms
1. dear, high-priced. See expensive.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for costlier
Contemporary Examples
Historical Examples
  • Costly costumes they would exchange for costumes that were costlier.

    The Paliser case Edgar Saltus
  • The costlier the offerings, the better would the feast be enjoyed.

    A Tour of the Missions

    Augustus Hopkins Strong
  • Such a criticism applies only to the rarer and costlier desiderata.

    The Book-Collector William Carew Hazlitt
  • Indeed that reserved for Madame was much the costlier of the two.

    Joyce's Investments Fannie E. Newberry
  • Certainly it will be costlier than the greatest war that has ever devastated the world.

  • It was not that his dress, although a uniform, was better or costlier than theirs.

    The Duke of Stockbridge Edward Bellamy
  • He begrudged even the costlier fuel that was their hope of safety.

    The Missourian

    Eugene P. (Eugene Percy) Lyle
  • Had the Scholar been with them, certainly there would have been a nobler and a costlier glass.

British Dictionary definitions for costlier

costly

/ˈkɒstlɪ/
adjective -lier, -liest
1.
of great price or value; expensive
2.
entailing great loss or sacrifice: a costly victory
3.
splendid; lavish
Derived Forms
costliness, 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
Cite This Source
Word Origin and History for costlier

costly

adj.

late 14c., from cost + -ly (1). Earlier formation with the same sense were costful (mid-13c.), costious (mid-14c.).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for costly

Most English speakers likely know this word

Word Value for costlier

10
12
Scrabble Words With Friends

Nearby words for costlier