persevere

v

1. continue, keep on or at, keep going, be steadfast, endure, abide; strive, labor, struggle, toil, moil, grub, grind, drudge, work unflaggingly, work day and night, stick to the job, Inf. stick it out, plug away, hammer away, do thoroughly, not do by halves, Sl. do it up brown, do to a frazzle; pursue, pursue relentlessly, chase, follow up, see through, leave no stone unturned, go to any lengths, go the limit, Inf. go the whole hog, go all the way, move heaven and earth, stop at nothing.

2. insist, stand firm, stand fast, stick to one's guns, hold one's ground; be unyielding, be obstinate, be resolute, not take "no" for an answer, brook no denial, have one's own way, have a mind of one's own; cling, cling to, adhere, be tenacious, hold fast, Inf. keep the faith, not give up the ship, go down fighting, die trying, die in harness, die with one's boots on.

3. bolster, sustain, maintain, uphold, support; prop, brace, buttress, underpin; shoulder, hold up, shore up, bear up.