Something given or offered without being asked for or requested; coming without invitation.
From the prefix 'un-' (not) combined with 'solicited,' from Latin 'sollicitare' (to disturb or agitate). The word entered English in the 17th century.
Most unsolicited emails and calls are so common now that entire industries exist just to filter them out—spam filters alone process about 45% of all email traffic worldwide!
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