costly
Translation
expensive, involving great loss or sacrifice
Examples
They bought a costly new car.
They bought a costly new car.
It was a costly mistake.
It was a costly mistake.
Grammar Patterns
a costly ((noun)) It was a costly error.
Similar Words
Synonyms: expensive, pricey; Antonyms: cheap, inexpensive
Etymology
From the noun 'cost' + the adjective-forming suffix '-ly'.
Memory Tips
If something has a high 'cost', it is 'costly'.