implacable, a. [unappeasable], [vindictive], [pitiless], irreconcilable.
implant, v. instill, inculcate, ingraft, infix.
implied, a. tacit, inferential.
implore, v. [beseech], supplicate, entreat, obsecrate.
imploring, n. supplication, obsecration.
impolite, a. [discourteous], inurbane, [rude], [uncivil], [disrespectful], [saucy], [insolent], [impertinent], [churlish], brusque, [unamiable], [surly], [gruff], [boorish].
impoliteness, n. [discourtesy], inurbanity, [incivility], impertinence, [insolence].
importance, n. [moment], [materiality], [consequence]; pomposity, [self-importance].
important, a. momentous, [material], [essential]; [pompous], consequential.