frequently_asked_questions_files/Oxford Thesaurus.pdf

impeach v. 1 charge, accuse, arraign, indict, incriminate, implicate,
inculpate, blame, censure: They were impeached for crimes
against the state. 2 (call into) question, challenge, attack,
disparage, discredit, impugn, deprecate, belittle, asperse, cast
aspersions on, declaim, slander, malign, vilify: My daughter's
character had been impeached by the witness.
impeccable
adj. faultless, flawless, perfect, ideal, pure, correct,
proper, spotless, immaculate, unblemished, spotless,
unimpeachable, blameless: His lectures, though impeccable in
content and style, lacked fire.
impede v. bar, obstruct, block, thwart, check, hinder, hamper, slow,
retard, restrain, brake, hold up, delay, foil, confound,
inhibit, curb, spike, stop: You can do nothing to impede the
relentless march of time.
impediment
n. bar, barrier, obstruction, block, check, hindrance,
encumbrance, restraint, hold-up, hitch, snag, restriction,
stricture, bottleneck, delay, hang-up, inhibition, curb: What
are the impediments to a happy marriage?
impending adj. imminent, approaching, (close or near) at hand, close,
nearing, forthcoming, brewing, to come, in view, in prospect, in
store, in the offing, on the horizon, in the air; looming,
threatening, menacing; Colloq Brit on the cards, US in the
cards: The impending deadline made us work all the faster. We
had a feeling of impending doom.
imperative
adj. 1 mandatory, compulsory, necessary, required, requisite,
demanded, obligatory, indispensable, essential, crucial, vital,
urgent, pressing, exigent: It is imperative that we catch the
5.04 to London. 2 imperious, commanding, authoritarian,
overbearing, peremptory, autocratic, domineering, magisterial,
lordly, arbitrary, dictatorial, dogmatic, tyrannical, despotic,
Colloq bossy: We were all shaken into obedience by her
imperative tone.
imperceptible
adj. 1 invisible, indiscernible, indistinguishable,