Definition of costly in English:

costly

Line breaks: cost¦ly
Pronunciation: /ˈkɒs(t)li
 
/

adjective (costlier, costliest)

1Costing a lot; expensive: major problems requiring costly repairs
More example sentences
  • This scared her because she feared not following through might one day be costly in terms of her job.
  • As in real life, a managerial appointment made in haste could end up being financially costly in the long run.
  • Legal processes are costly in terms of both the fees and the management time involved.
Synonyms
expensive, dear, high-cost, high-priced, highly priced, overpriced, exorbitant, extortionate, immoderate, extravagant; lavish, rich, deluxe, choice, fine, exquisite; valuable, priceless, worth its weight in gold, worth a king's ransom; Britishupmarket, over the odds
informal steep, pricey
1.1Causing suffering, loss, or disadvantage: the government’s biggest and most costly mistake
More example sentences
  • This will teach him very early in life that some mistakes are costly and cannot afford to be made again.
  • With hindsight it might have been a costly mistake but we put the education of our students first and foremost.
  • It seems the council missed out on an opportunity and made a costly mistake.
Synonyms
catastrophic, ruinous, disastrous, calamitous, cataclysmic, devastating, crippling, crushing, fatal, lethal, damaging, harmful, injurious, deleterious, woeful, grievous, lamentable, dire, awful, terrible, unfortunate
literary direful

Derivatives

costliness

noun
More example sentences
  • Scarcity and resulting costliness confined its use chiefly to precious metalworking, where it was employed as a flux to cleanse surfaces of oxides and reduce melting temperatures to aid welding and soldering.
  • The relative costliness of labor encouraged labor-saving mechanization; the scarcity of capital made it worthwhile to build machines cheaply and use them intensively.
  • The goals of this program are to limit the frequency, severity and costliness of asthma exacerbations through extensive education of physicians, children and caregivers.

Definition of costly in:

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Word of the day apposite
Pronunciation: ˈapəzɪt
adjective
apt in the circumstances or relation to something