thế

Etymology 1
.

Noun

 * 1) position; posture
 * 2) condition; situation
 * 3) power; authority
 * 1) power; authority

Adverb

 * 1) thus; so; like that

Etymology 2
.

Verb

 * 1) to replace; to substitute

Etymology 3
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Noun

 * 1)  era; time; generation