illness, n. [malady], [sickness], [disease].
illogical, a. [fallacious], [sophistical], [unsound].
illusion, n. [mockery], [hallucination], [chimera], phantasm, [delusion], [glamour].
illusive, a. delusive, illusory, chimerical, [mocking].
illustrate, v. elucidate, [picture], demonstrate, exemplify.
illustration, n. elucidation, exemplification; [comparison], [example], [simile].
ill-will, n. [malice], [resentment], [grudge], [rancor], malevolence, [antipathy], [hatred].
image, n. [statue]; effigy, [figure]; ikon, eikon; [idol].
image breaker. iconoclast, idoloclast, [vandal].
image breaking. iconoclasm, vandalism.