U

restrive

verb (used without object), strove or strived, striv·en [striv–uh n] /ˈstrɪv ən/ or strived, striv·ing.

to exert oneself vigorously; try hard: He strove to make himself understood.
to make strenuous efforts toward any goal: to strive for success.
to contend in opposition, battle, or any conflict; compete.
to struggle vigorously, as in opposition or resistance: to strive against fate.
to rival; vie.

verb strives, striving, strove or striven (ˈstrɪvən)

(may take a clause as object or an infinitive) to make a great and tenacious effortto strive to get promotion
(intr) to fight; contend

c.1200, from Old French estriver “to quarrel, dispute,” from estrif, estrit “quarrel” (see strife). It became a strong verb (past tense strove) by rhyming association with drive, etc.