costly
adjective
costing much; expensive; high in price.
costliest
-
superlativeof costly.superlative
The form of an adjective or adverb indicating the greatest degree of a quality.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Meanwhile, Terra Drone has partnered with Japanese precision manufacturers to develop components like batteries—the costliest part of a drone.
From The Wall Street Journal ● Sep. 8, 2026
Berlin aims to rationalize burdensome data-protection regulations, freeing small businesses from the costliest strictures.
From The Wall Street Journal ● Jul. 9, 2026
It was reported to be the costliest documentary film of all time, even with production costs undisclosed.
From MarketWatch ● Apr. 30, 2026
Later in the year, Jaguar Land Rover was attacked, in what became the costliest cyber event in UK history.
From BBC ● Apr. 1, 2026
When Cortes and his Indian allies finally attacked, the Mexica resisted so fiercely despite their weakness that the siege has often been described as the costliest battle in history—casualty estimates range up to 100,000.
From "1491" by Charles C. Mann
