Hangul Syllable Bwae

It means “see or meet respectfully,” usually inside a verb form.

봬 is the shortened form of 뵈어, from 뵈다, the honorific verb for seeing or meeting an older or higher-status person. In 내일 봬요, it reads as a polite “See you tomorrow.” The shortcut is ordinary vowel contraction: 뵈어 → 봬, just as 되어 → 돼.

The root is older than the compact spelling. A study of 15th century Korean places 뵈다 among lexical honorifics. A 2002 National Institute guide separates three homonymous 뵈다 verbs — “be seen,” “show,” and “meet respectfully” — so the words around 봬 settle whether it is about looks or a person you will meet.

Is it 봬요 or 뵈요?

Write 봬요, not 뵈요.

뵈어요 contracts to 봬요; sticking 요 straight onto the stem gives the nonstandard 뵈요. Keep 뵈 before endings such as 뵐까요? or 뵈러, and use the related, slightly more deferential 뵙- in forms such as 뵙겠습니다.

The same pattern gives 봬서, 봬도, and 뵀다. If your sentence means “be seen” or “show,” the spelling can still be 봬; the surrounding words tell you which 뵈다 you have.