What is another word for "constraint"?

Roget's Thesaurus (1911) lists these synonyms for "constraint": and, background, bashful, bashfulness, beat, blush, blushing, bushel, candle, cast, ceremony, constrained, countenance, coy, demure, demureness, diffidence, diffident, disposition, distance, draw, drum, eye, face, fame, find, give, good, hide, humble, humbly, humility, keep, light, merit, modest, modesty, nervous, noiseless, not.