stand–up

1 following the accepted rules of moral conduct a real stand-up guy, he's willing to raise the child—by himself if necessary Synonyms decent, ethical, honest, just, noble, principled, respectable, righteous, stand-up, upright, upstandingRelated Words blameless, guiltless, irreproachable, unassailable, unimpeachable; chivalrous, classy, high-minded, menschy, right-minded; conscientious, fair, good, incorruptible, moral, reputable, respected, scrupulous, uncorrupted, virtuous; decorous, nice, polite, proper, seemlyNear Antonyms bad, blackguardly, corrupt, criminal, crooked, evil, immoral, iniquitous, knavish, mean, nefarious, rascally, reprehensible, roguish, rotten, scoundrelly, sinful; unfair, unscrupulous, vile, villainous, wicked, wretched; blamable, blameworthy, censurable, culpable; debased, debauched, decadent, degenerate, degraded, demoralized, depraved, disgraceful, disreputable, dissipated, dissolute, libertine, loose, perverse, perverted, profligate, reprobate, shameful, venalAntonyms base, dishonest, dishonorable, ignoble, low, unethical, unjust, unprincipled, unrighteous, unworthy

2 rising straight up a puppy with stand-up ears Synonyms perpendicular, plumb, raised, standing, stand-up, upright, upstanding, verticalRelated Words elevated, lifted, upended, upraised; semierect; freestanding, stand-aloneNear Antonyms prostrate, supine; diagonal, hanging, sagging, slant, slanted, slanting, slantyAntonyms flat, recumbent