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欠ける， 缺ける， 闕ける， かける
1. to chip, to be chipped, to break (off), to be damaged
2. to be missing (from a set, team, etc.), to be absent, to become lost
3. to be lacking (in), to be short (of), to be deficient, to be wanting (in)
4. to wane (of the moon), to go into eclipse...
碎裂，断裂（脱落），受损；缺席，走失；缺乏，不足，欠缺，缺少；月亏，月食
に
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), for, with
5. by, from
6. as (i.e. in the role of)
7. per, in, for, a (e.g. "once a month")
8. and, in addition to
9. if, although
tbd