sour

on, upon / on top of / from on top of / above / out of / in the case of / about, concerning / in (a place)

over, on top of / over- (excessive; excessively; too much)

at once, instantly, on the spot, right away

made-to-measure, custom-made, tailor-made, custom, bespoke

(espionage) tapped, bugged

on demand, to order / on command, at will, whenever one wants

to swoop down on; to pounce on / to set upon; to fall upon, as a predator upon prey / to move swiftly toward, generally in an attacking manner

plural of sur-ensemble

(set theory) superset