남발해요 · 남발했어요 · 남발할 거예요 · 남발하세요
to issue recklessly, to overuse, to throw around (promises)
Example
정치인들이 선거 때마다 공약을 남발합니다.
Politicians throw around campaign promises every election.
Word parts
남 excess+발 issue
Literally 'issue in excess', like printing too much money.