costly
adjective
entailing great loss or sacrifice
“a dearly-won victory”
Synonymsdearly-wonhaving a high price
“costly jewelry”
“high-priced merchandise”
Source: WordNet 3.1, Princeton University
Costly meaning
What does “costly” mean? Definitions, examples, synonyms and opposites.
“costly” is an adjective with 2 meanings. Its most common meaning is: entailing great loss or sacrifice.