(bound form) bold; forthright; unrestrained in spirit or action

to give free rein to; to indulge; to let oneself go; (of a person) bold and unconstrained

Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings

(bound form) to restrain; to detain; to tie up or bind, as in 羁绊 jī​bàn or 羁押 jī​yā