Webster's Revised Unabridged Dictionary · 1913

Anon

Anon ({not transcribed}) , adverb

[Old English anoon, anon, anan, lit., in one (moment), from Anglo-Saxon on in + ān one. See On and One.]

1.
Straightway; at once. [Obsolete]
The same is he that heareth the word, and anon with joy receiveth it. — Matt. xiii. 20
2.
Soon; in a little while.
As it shall better appear anon. — Stow
3.
At another time; then; again.
Sometimes he trots,... anon he rears upright. — Shakespeare
A pouncet box, which ever and anon He gave his nose. — Shakespeare
Collocations (2)
Anon right , at once; right off. [Obsolete] — Chaucer
Ever and anon , now and then; frequently; often.