навскидку

Russian

на (na) +‎ вски́дку (vskídku, “a throwing/tossing up”, in the accusative case)

навски́дку • (navskídku)

(hunting, military, about shooting) offhand (quickly throwing up the gun and not leaning on anything with the elbows)
це́литься навски́дку ― célitʹsja navskídku ― to aim offhand
(figuratively, colloquial) off the top of one's head, offhand, without preparation, roughly, randomly
Я мог бы навски́дку назва́ть де́сять таки́х челове́к. ― Ja mog by navskídku nazvátʹ désjatʹ takíx čelovék. ― I could name ten people like that off the top of my head.

Я не по́мню навски́дку. ― Ja ne pómnju navskídku. ― I don't remember offhand.