phony as a three-dollar bill

Adjective

not-comparable

(simile, set phrase) Extremely phony; fake; dishonest; completely bogus.

Japanese Meaning

極めて偽りの、偽物の / 非常に不誠実な、詐欺的な / 全く信用できない、でたらめな

His promises were phony as a three-dollar bill, so I didn't trust him.

彼の約束はまったくの偽物で、私は彼を信用しませんでした。

Sense（1）

(simile, set phrase) Extremely phony; fake; dishonest; completely bogus.