Not asked for; not made the subject of a request.

(un-, prefix1 affix 2.)

Originally: (of a thing, esp. an action) unasked for, unsought; not demanded or called for. Later also: not obligatory or compulsory.

Not begged or entreated.

(un-, prefix1 affix 2a affix 2c.)

Not thrust or pressed upon one.

Not raked; that has not been scraped or swept with a rake. Also with up.

With for: Not called for; not asked for or requested; unnecessary, intrusive.

(un-, prefix1 affix 2b.)

(un-, prefix1 affix 2.)

Not bespoken; not ordered, engaged, or arranged for.

Not asked for; given or done voluntarily.

Similarly with for.

Not ordered, commanded, or commissioned.

Offered or sent without the prior agreement of the recipient; (esp. of a manuscript, etc.) uncommissioned, unsolicited, unexpected.