overgo
To cross, go over (a barrier etc.); to surmount.
archaic
To pass (a figurative barrier); to transgress.
obsolete
How many an one in its vanities hath gloried and taken pride, / Till froward and arrogant thus he grew and did all bounds o'ergo!
To pass by, pass away; often, to go unnoticed.
intransitive
He did not rave, he did not stare aghast, / For all those visions were o'ergone, and past […]
To spread across (something); to overrun.
Where it comes from
From Middle English overgon, from Old English ofergān (“to pass over, beyond, across, traverse, cross, transgress, overstep, overrun, overcome, overspread, conquer, come upon, overtake, seize, attack, pass off, pass away, end, overreach”), equivalent to over- + go. Cognate with Dutch overgaan, German übergehen, Swedish övergå.
Adapted from the Wiktionary entry overgo (CC BY-SA 4.0).