Adjective
(idiomatic) Irrevocably committed to something.
(idiomatic) In trouble.
Source: en.wiktionary.orgIt’s pricey, but try chipping in for it with your siblings. Source: Internet
You give the words that would stand in for it and I'll change it.” Source: Internet
Mr. Dodgson said something about going outside because of the light, and Ina leaned over and whispered, "You're in for it now." Source: Internet