Webster's Revised Unabridged Dictionary · 1913

Likely

Likely (līk"li*ẽr) , adjective

[That is, like-like. See Like, a.]

1.
Worthy of belief; probable; credible; as, a likely story.
It seems likely that he was in hope of being busy and conspicuous. — Johnson
2.
Having probability; having or giving reason to expect; -- followed by the infinitive; as, it is likely to rain.
3.
Similar; like; alike. [Obsolete] — Spenser
4.
Such as suits; good-looking; pleasing; agreeable; handsome. — Shakespeare
5.
Having such qualities as make success probable; well adapted to the place; promising; as, a likely young man; a likely servant.
6.
Improbable; unlikely; -- used ironically; as, a likely story. [informal]

Likely , adverb

In all probability; probably.
While man was innocent he was likely ignorant of nothing that imported him to know. — Glanvill