sharp cookie

idiomatic

(idiomatic) One who is intelligent, bright, or sharp; especially, one who can identify attempts to deceive or mislead.

Japanese Meaning

抜け目のない人 / 機転の利く人 / 知恵のある人

Don't underestimate Jenna; she's a sharp cookie who solved the problem in minutes.

ジェナを過小評価してはいけない。彼女は数分でその問題を解決した切れ者だ。

Sense（1）

(idiomatic) One who is intelligent, bright, or sharp; especially, one who can identify attempts to deceive or mislead.

She's a sharp cookie and will have no trouble seeing a sales pitch for what it is.

sharp cookies

（ plural ）