What is the meaning of -요?
A particle attached to intimate-style verbs and adjective endings and some blunt-style endings to form the polite style, the usual speech level for polite but not extremely formal conversation, e.g. by a student to a teacher, a child to a parent, or between colleagues.
A particle attached to substantives, adverbs, or non-sentence-final endings to show respect to the listener in the polite style.
Gyeongsang and Jeolla dialect form of 오 (-o, post-vowel allomorph of 소 (-so, semi-formal style sentence-final suffix)).
Source: wiktionary.orgSearch words containing