also over-run, Middle English overrennen, from Old English oferyrnan "to run across, pass over;" see over- + run (v.). Meaning "continue beyond a specified time" is from early 14c. Meaning "to ravage (a land), maraud, plunder" is by mid-14c. Of weeds, etc., "to grow over, cover all over," by 1660s. The noun meaning "excess expenditure over budget" is from 1956. Related: Overran; overrunning.
It forms all or part of: hyper-; insuperable; over; over-; sirloin; somersault; soprano; soubrette; sovereign; sum; summit; super-; superable; superb; superior; supernal; supra-; supreme; sur-.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit upari, Avestan upairi "over, above, beyond;" Greek hyper, Latin super "above, over;" Old English ofer "over," German über, Gothic ufaro "over, across;" Gaulish ver-, Old Irish for.