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) joyous; pleased; cheerful; merry; often seen in compounds like 欢乐 huān​lè or 欢喜 huān​xǐ

Connects an adverb-like description to the following verb to show the manner, cause, or basis of an action.

to break up; to disperse; to come to an end