frequently_asked_questions_files/Oxford Thesaurus.pdf

impotent adj. 1 weak, powerless, helpless, frail, feeble, enervated,
debilitated, infirm: When it came to political influence, I was
impotent. 2 inadequate, ineffective, ineffectual, inept,
incompetent: The attempted robbery was a half-hearted, impotent
effort. 3 sterile, barren, infertile, infecund: They never had
any children because Dixon was impotent.
impoverished
adj. 1 destitute, poor, poverty-stricken, penurious, beggared,
needy, necessitous, impecunious, in sore or bad straits,
straitened, in distress, badly off, bankrupt, insolvent, ruined,
Colloq (dead or flat) broke, stony-broke, bad off, pinched, up
against it, on one's uppers, short, US strapped, wiped out,
Slang Brit skint: A series of failed harvests left many farmers
impoverished. 2 stripped, barren, desolate, wasted, empty,
depleted, denuded, drained, exhausted: Two years of drought
left the land impoverished.
impracticable
adj. 1 unworkable, infeasible or unfeasible, impossible,
unattainable, unachievable: The new engine design proved
impracticable because of its high fuel consumption. 2
unsuitable, unfit, unusable, useless, inapplicable: As we have
no electricity, air conditioners are impracticable.
impractical
adj. 1 visionary, starry-eyed, unrealistic, romantic, quixotic,
wild: Laura's solutions are very creative but quite
impractical. 2 useless, ineffective, ineffectual, unworkable,
unavailing, impracticable: The idea looked good on paper but
proved impractical when we tried it.
imprecise adj. inexact, inaccurate, wrong, inexplicit, indefinite,
ill-defined, indistinct, vague, hazy, cloudy, blurred, fuzzy,
woolly, ambiguous: The readings are imprecise because the
needle wavers so much.
impregnable
adj. invulnerable, impenetrable, inviolable, unconquerable,
invincible, unbeatable, indomitable, secure, safe, mighty,
well-fortified: The walls of the castle, sixteen feet thick,
were impregnable.