on the qt

Informal.

1. quiet.

Idioms

2. on the q.t., stealthily; secretly: to meet someone on the q.t.

abbreviation for informal

1. quiet
2. on the q.t. secretly

n.slang for “quiet,” in phrase on the q.t., attested from 1874. Phrase on the quiet appears from 1847. see on the Q.T.