phụ

Etymology 1
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Verb

 * 1) to aid, to help, to assist

Adjective

 * 1) side, secondary, ancillary

Etymology 2
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Verb

 * 1)  to disappoint; to betray
 * 2) * 14th century,, ' Ch. 4; 1909''', Vietnamese translation by
 * Tháo nói: - Thà rằng ta phụ người, còn hơn để người phụ ta.
 * [Cao] Cao said: I'd rather betray others than let others betray me.
 * [Cao] Cao said: I'd rather betray others than let others betray me.