Select the word or phrase that is most closely opposite in meaning to the original word : Costly
A
Frugal
B
Economical
C
Thirifty
D
Expensive
Correct Answer: Economical
costly. Antonyms: valueless, cheap, low - priced, mean, worthless, beggarly, paltry. Synonyms: valuable, expensive, high - priced, rich, precious, sumptuous.