What is another word for "ought"?

Roget's Thesaurus (1911) lists these synonyms for "ought": all, and, armed, bad, bias, bigotry, bold, bon, box, breach, clear, cry, custom, delight, deserve, devil, distinction, dole, done, droit, due, duty, ell, encroach, equable, equal, equitableness, equity, even, evenhanded, every, fair, favor, favoritism, fides, field, fit, fitness, for, foul.