• Be in (one's) dotage
• Be in charge of the clean-up
• Be in hot water
• Be in the same boat
• Be incommunicado
• Be indisposed
• Be infected with sadware
• Be inferred illatively
• Be influenced corruptibly
• Be inglobated within
• Be injected intracutaneously
• Be inspired by a maharishi
• Be interbedded with
• Be intransmissible from (someone) to (someone)
• Be invested with beadleship
• Be involved in an activity