Webster's Revised Unabridged Dictionary · 1913

Flit

Flit , intransitive verb

[Old English flitten, flutten, to carry away; compare Icelandic flytja, Swedish flytta, Danish flytte. r84. Compare Fleet, v. i.]

1.
To move with celerity through the air; to fly away with a rapid motion; to dart along; to fleet; as, a bird flits away; a cloud flits along.
A shadow flits before me. — Tennyson
2.
To flutter; to rove on the wing. — Dryden
3.
To pass rapidly, as a light substance, from one place to another; to remove; to migrate.
It became a received opinion, that the souls of men, departing this life, did flit out of one body into some other. — Hooker
4.
To remove from one place or habitation to another. [Scottish & Provincial English] — Wright. Jamieson
5.
To be unstable; to be easily or often moved.
And the free soul to flitting air resigned. — Dryden

Flit , adjective

Nimble; quick; swift. [Obs.] See Fleet.