(idiomatic, colloquial) Well-informed concerning.

(informal) Legitimate; honest; upright.

Alternative spelling of on the up-and-up

simple past tense and past participle of gang up on

present participle of gang up on

Third-person singular simple present indicative form of gang up on

(transitive, idiomatic) To notice, observe, learn, or understand, especially something otherwise overlooked.

To study particularly hard to learn a subject quickly.

(transitive, idiomatic) To join together in a group in order to overpower someone else.

(slang) To rub one's body against another person as a form of sexual stimulation or flirting. / To stimulate, interact, or resonate with.