impetuosity, n. 1. hastiness, abruptness, precipitateness, impetuousness; rashness, temerity, recklessness, boldness, brashness, foolhardiness; impulsiveness, thoughtlessness, offhandedness, heedlessness, incaution; hot-bloodedness, excitability, hotheadedness; unruliness, intractability, intractableness, obstinacy, obstinateness, willfulness, stubbornness.
2. eagerness, enthusiasm, ardor, ardency, ardentness, fervor, fervency, ferventness; spirit, dlan, dash, liveliness, buckishness, spiritedness; spontaneity, abandon, unrestraint.
3. violence, force, power, might, vigor; rage, fury, frenzy; ferocity, fierceness, ferociousness, furiousness.
impetuous, adj. 1. hasty, quick, abrupt, swift; precipitate, headlong, careless, slapdash; eager, energetic, dashing, buckish, spirited, lively.
2. impulsive, spontaneous, unreflective, thoughtless, unreasoned, unreflecting, offhand, spur-of-the-moment, ill-conceived; mercurial, fickle, capricious; overhasty, rash, reckless, madcap, temerarious; brash, heedless, incautious, heady, foolhardy; excitable, impatient, hot-blooded, Inf. quick on the trigger, Inf. trigger-happy; hotheaded, fiery, ardent, passionate, overzeal-ous; burning, fervid, perfervid.
3. violent, forceful, powerful, vigorous, raging; rampant, unrestrained, uncontrolled, unbridled, wild, ungoverned; unrestrainable, ungovernable, uncontrollable, unruly; intractable, headstrong, willful, stubborn, obstinate.
impetus, n. 1. instigation, actuation, moving force, spark, stimulus, stimulation, incentive, motivation, inducement, inspiration, encouragement, influence; urging, pressing, spurring, pricking, whipping, lashing, goading; spur, prick, whip, lash, goad.
2. momentum, propulsion, continuing motion, energy, thrust, impelling force, drive, push.
impiety, n. 1. ungodliness, godlessness, irreligion; apostasy, recidivism, backsliding; atheism, agnosticism, paganism, heathenism.
2. irreverence, disrespect, disrespectfulness, lack of respect; insolence, impertinence, mockery, scoffing, derision; ridicule, insult, jeering, sneering, smirking.
3. sin, sinfulness, wickedness, vice, wrong, wrongdoing, malpractice; corruption, evildoing, transgression, offense, trespass; sacrilege, abomination, desecration, befoulment, defilement; cursing, swearing, foul language, blasphemy, profanity, taking the Lord's name in vain.
impinge, v. 1. encroach, infringe, intrude, invade, trespass, Inf. horn in, usurp.
2. strike, hit, dash, run against, knock against, butt against, bump against, collide with; jolt, push, prod, shove, come into conflict with.
3. affect, impress, touch, touch upon, influence, exert influence, relate to, have a relation to, bear upon, have to do with, Inf. tie in with, pertain to.
impious, adj. 1. irreverent, irreligious, indevout, ungodly; Pharisaical, canting, pietistical, sanctimonious, hypocritical; blasphemous, sacrilegious, desecra-tive; unrighteous, iniquitous, sinful, wicked, satanic, diabolic; perverted, reprobate, immoral, iniquitous, impure.
impish, adj. mischievous, full of mischief, mischief-making, prankish; imp-like, pixyish, puckish, elfish, elfin; devilish, trouble-making, unruly, unmanageable, difficult to handle, intractable, perverse; obnoxious, annoying, Inf. pesky, insufferable.
implacability, n. mercilessness, pitilessness, lack of compassion, lack of sympathy, hard-heartedness, heartlessness; rigidity, firmness, hardness, inexorability, relentlessness; unforgiveness, grudge-holding, lack of forgiveness, revenge-seeking, vengefulness.