costly

Synonyms: an arm and leg cher dear excessive executive exorbitant extortionate extravagant fancy high highly priced high-priced inordinate precious premium pricey steep stiff top valuable

Antonyms: cheap inexpensive reasonable

Synonyms: gorgeous inestimable invaluable lavish luxurious opulent precious rich splendid sumptuous valuable

Antonyms: cheap not valuable poor

Synonyms: catastrophic deleterious disastrous loss-making ruinous sacrificial

Antonyms: aiding helpful