staying power

determination, will; iron will, unconquerable will; will of one's own, decision, resolution; backbone; clear grit, true grit, grit [U.S. & Can.]; sand, strength of mind, strength of will; resolve (intent); firmness (stability); energy, manliness, vigor; game, pluck; resoluteness (courage); zeal; aplomb; desperation; devotion, devotedness., mastery over self; self control, self command, self possession, self reliance, self government, self restraint, self conquest, self denial; moral courage, moral strength; perseverance; tenacity; obstinacy; bulldog; British lion.

have determination; know one's own mind; be resolved; make up one's mind, will, resolve, determine; decide (judgement); form a determination, come to a determination, come to a resolution, come to a resolve; conclude, fix, seal, determine once for all, bring to a crisis, drive matters to an extremity; take a decisive step (choice); take upon oneself (undertake)., devote oneself to, give oneself up to; throw away the scabbard, kick down the ladder, nail one's colors to the mast, set one's back against the wall, set one's teeth, put one's foot down, take one's stand; stand firm (stability); steel oneself; stand no nonsense, not listen to the voice of the charmer., buckle to; buckle oneself put one's shoulder to the wheel, lay one's shoulder to the wheel, set one's shoulder to the wheel; put one's heart into; run the gauntlet, make a dash at, take the bull by the horns; rush in medias res, plunge in medias res; go in for; insist upon, make a point of; set one's heart upon, set one's mind upon., stick at nothing, stop at nothing; make short work of (activity); not stick at trifles; go all lengths, go the limit, go the whole hog; persist (persevere); go through fire and water, ride the tiger, ride in the whirlwind and direct the storm.

resolved; determined; strong-willed, strong-minded; resolute (brave); self-possessed; decided, definitive, peremptory, tranchant; unhesitating, unflinching, unshrinking; firm, iron, gritty [U.S.], indomitable, game to the backbone; inexorable, relentless, not to be shaken, not to be put down; tenax propositi; inflexible (hard); obstinate; steady (persevering)., earnest, serious; set upon, bent upon, intent upon., steel against, proof against; in utrumque paratus.

resolutely; in earnest, in good earnest; seriously, joking apart, earnestly, heart and soul; on one's mettle; manfully, like a man, with a high hand; with a strong hand (exertion)., at any rate, at any risk, at any hazard at any price, at any cost, at any sacrifice; at all hazards, at all risks, at all events; a bis ou a blanc; cost what it may; coute; a tort et a travers; once for all; neck or nothing; rain or shine.