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costly
adjective
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How to pronounce costly:

Definition of costly:

costly (adjective):
entailing great loss or sacrifice.
commanding a high price especially because of intrinsic worth

Synonyms for costly:

preciousexpensivehighluxuriouspriceyvaluablepricelessextravagant

Antonyms for costly:

inexpensivepoorgiveawaybudgetthriftyfairmodestreducedaffordableeconomic
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Other 2-syllable words like costly

Here are some other common words that have 2 syllables, like costly does.

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