[in honor of] {prep.} As an honor to; for showing respect […]

[in hopes] {adj. phr.} Hopeful; hoping. * /The Mayor was in […]

[in horror] See: [THROW UP ONE'S HANDS IN HORROR].

[in hot water] See: [HOT WATER].

[in itself] See: [END IN ITSELF].

[in keeping] {adj. phr.} Going well together; agreeing; similar. * /Mary's […]

[in kind] {adv. phr.} In a similar way; with the same […]

[in knots] See: [TIE IN KNOTS].

[in league with] or {informal} [in cahoots with] {prep.} In secret […]

[in left field] See: [OUT IN LEFT FIELD].