imitator, n. [copyist], [follower], [mimic], mime, [ape], [echo], [impersonator].
immanence, n. inherence, [indwelling].
immanent, a. [inherent], [indwelling].
immature, a. [undeveloped], embryonic, [crude], unripe, premature, [untimely].
immediately, adv. [instantly], [forthwith], [directly], [straightway], at once, [now], instanter. Antonyms: hereafter, by and by, after a while.
immense, a. [vast], infinite, illimitable, immeasurable.
immerse, v. [submerge], plunge into, [dip], immerge, [douse]; engross.
immersed, a. submerged, plunged into; engrossed, absorbed, occupied.
immersion, n. submersion, immersing; engrossment, [absorption].
immoderate, a. [excessive], [exorbitant], inordinate, [intemperate], [unrestrained].