1580s, from un- (1) "not" + usual (adj.). Related: Unusually.
a scene of unusual beauty
an unusual meteorite
a man of unusual ability
cruel and unusual punishment
two-career families are no longer unusual
untruth
unturned
untwist
unusable
unused
unusual
unutterable
unvanquished
unvarnished
unvarying
unveil
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}