Senses
不 not
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
不 [potential]
Used between a verb and its result to show that the action cannot achieve that result; used as the negative form of the 得 potential construction
不 [inquiry]
Used at the end of a sentence to form a question, similar to 吗 .
不 whether or not
(literary) Used at the end of a sentence to ask whether something is true; same as 否
不 calyx
(literary) The sepals of a flower; the outer protective parts of a flower bud.
不 Bu
A Chinese surname.
不 very
Used for emphasis before certain adjectives (especially after 好 ) to mean how or so, as in 好不