Verb (1-dan, intransitive)
1. to split; to be split; to splinter; to chip; to be sliced (off); to be scraped (off)
2. to become sunken (e.g. of cheeks); to become hollowed; to become drawn; to become emaciated
3. to weaken (e.g. of motivation, interest, etc.); to decrease; to diminish; to become dampened; to abate
4. to go off the rails; to become unusual; to diverge