impulsive, adj. 1. spontaneous, extemporaneous, unplanned, offhand; hasty, spur-of-the-moment, snap, right-off-the-bat, precipitate, sudden, quick; rash, impetuous, impulsive, brash; reckless, madcap, foolhardy, incautious, careless, devil-may-care, Sl. what-the-hell; thoughtless, heedless, shooting-from-the-hip, natural, instinctive.
2. compelling, powerful, forcible, forceful; propulsive, driving, dynamic.
impunity, n. exemption, immunity, indemnity; freedom, release, excusal, exception, exclusion; absolution, pardon, amnesty, reprieve, stay of execution; remission, respite, relief.
impure, adj. 1. contaminated, tainted, infected, poisoned, polluted; foul, feculent, turbid, muddy, murky, clouded, cloudy, unclear; unclean, dirty, dirtied, filthy, sullied, soiled, maculate, spotted, stained.
2. adulterated, alloyed, mixed, combined, fused; hybrid, mongrel.
3. unchaste, unvirgin, unvirginal, defiled; corrupted, debased, lowered, degraded, vitiated, degenerate, base, low; perverted, depraved, evil, vile, sinful, wicked; immoral, amoral, loose, promiscuous, wanton, immodest, shameless; dissolute, licentious, libertine, profligate, incontinent, unrestrained, Pathol, nymphomaniacal, Pathol, satyrical; lascivious, prurient, passionate, sensual, sexual, Inf. hot, desirous, concupiscent; lewd, lustful, lecherous, libidinous, Archaic. lickerish, salacious.
4. obscene, dirty, vulgar, pornographic, smutty; bawdy, indecent, ribald, improper, risqu6, suggestive, sexy, racy, blue, off-color; gross, crude, coarse, rough, indelicate.
impurity, n. 1. contamination, befoulment, pollution, adulteration, infection; uncleanness, dirtiness, filthiness, foulness, feculence; turbidity, turbidness, muddiness, murkiness, cloudiness.
2. unchasteness, unchastity, defilement, corruption, perversion; debasement, degradation, vitiation, degeneration; baseness, vileness, evilness, evil, sinfulness, wickedness; depravity, depravedness, immorality, amorality, looseness, promiscuity, wantonness; dissoluteness, licentiousness, libertinism, profligacy, profligateness, incontinence, incontinency, Pathol, nymphomania, Pathol, satyriasis; lasciviousness, prurience, pruriency, passion, desire, concupiscence, sensuality, sexuality; lust, lustfulness, lewdness, lecherousness, libidinousness, Archaic, lickerishness, salaciousness, salacity.
3. obscenity, vulgarity, vulgarness, smuttiness; bawdiness, indecency, impropriety, immodesty, impu-dicity; grossness, crudeness, coarseness, roughness, indelicacy.
impurities dirt, filth, grime, smut; spots, stains, soil marks, marks, smudges, smutches, smirches.
imputable, adj. 1. attributable, ascribable, accred-itable, creditable, referable, assignable; owing to, due to; associable, connectable.
2. accusable, chargeable, challengeable, allegeable, assertable, citable; implicatory, implicative, criminative, incriminatory, accusatory, putative; indictable, impeachable; censurable, blameworthy, blamable; re-proachable, imprecatory, denunciable; accursed, damnable, execrable, maledictory, comminatory, anath-ematic, Obs. exprobatory.
imputation, n. 1. (all usu. in reference to fault or wrongdoing) attribution, ascription, arrogation, accounting, charge, challenge, accusation, assertion, allegation, citation, incrimination, crimination, implication, Obs. Rare, accrimination; arraignment, impeachment, indictment, censure, blame, reproach, inculpation, railing, commination, invective, denunciation, revilement, contumely, malediction, curse, animadversion, imprecation, delation, Archaic, exprobation.