Verb (1-dan, intransitive)
1. to chip; to be chipped; to break (off); to be damaged
刃が欠けていた。The blade was chipped.
2. to be missing (from a set, team, etc.); to be absent; to become lost
一人も欠けてはならないのだ。Not a single person must be missing.
3. to be lacking (in); to be short (of); to be deficient; to be wanting (in)
それを予測するための情報があまりにも欠けていた。There was too little information to predict it.
4. to wane (of the moon); to go into eclipse
also 虧ける
すれ違う二人を、欠けた月だけが見守っていた。Only the waning moon watched over the two as they passed each other.