IMPAIR—injure, diminish, decrease.
IMPART—reveal, divulge, disclose, discover, afford.
IMPARTIAL—just, equitable, unbiased. (Partial.)
IMPASSIONED—glowing, burning, fiery, intense.
IMPEACH—accuse, charge, arraign, censure.
IMPEDE—hinder, retard, obstruct. (Help.)
IMPEDIMENT—obstruction, hindrance, obstacle, barrier. (Aid.)
IMPEL—animate, induce, incite, instigate, embolden. (Retard.)
IMPENDING—imminent, threatening.
IMPERATIVE—commanding, authoritative.