Not in keeping with accepted standards of what is right or proper in polite society:
— Language unbecoming to a lady.

synonyms: indecent, indecorous, uncomely, unseemly, untoward.

Roget 940: dishonest, dishonorable; unconscientious, unscrupulous; fraudulent etc. 545; knavish; disgraceful etc. (disreputable) 974; wicked etc. 945.    false-hearted, disingenuous; unfair, one-sided; double, double-hearted, double-tongued, double-faced; timeserving^†, crooked, tortuous, insidious, Machiavelian, dark, slippery; fishy; perfidious, treacherous, perjured.    infamous, arrant, foul, base, vile, ignominious, blackguard.    contemptible, unrespectable, abject, mean, shabby, little, paltry, dirty, scurvy, scabby, sneaking, groveling, scrubby, rascally, pettifogging; beneath one.    low-minded, low-thoughted^†; base-minded.    undignified, indign^†; unbecoming, unbeseeming^†, unbefitting; derogatory, degrading; infra dignitatem [Lat.], beneath one's dignity; ungentlemanly, ungentlemanlike; unknightly^†, unchivalric^†, unmanly, unhandsome; recreant, inglorious.    corrupt, venal; debased, mongrel.    faithless, of bad faith, false, unfaithful, disloyal; untrustworthy; trustless, trothless^†; lost to shame, dead to honor; barratrous.    ... show more

Roget 925: undue; unlawful etc. (illegal) 964; unconstitutional; illicit; unauthorized, unwarranted, disallowed, unallowed^†, unsanctioned, unjustified; unentitled^†, disentitled, unqualified, disqualified; unprivileged, unchartered.    illegitimate, bastard, spurious, supposititious, false; usurped.    tortious [Law].    undeserved, unmerited, unearned; unfulfilled.    forfeited, disfranchised.    improper; unmeet, unfit, unbefitting, unseemly; unbecoming, misbecoming^†; seemless^†; contra bonos mores [Lat.]; not the thing, out of the question, not to be thought of; preposterous, pretentious, would-be.    ... show more

Roget 874: disgraced etc. v.; blown upon; shorn of its beams" [Milton], shorn of one's glory; overcome, downtrodden; loaded with shame etc. n.; in bad repute etc. n.; out of repute, out of favor, out of fashion, out of countenance; at a discount; under a cloud, under an eclipse; unable to show one's face; in the shade, in the background; out at elbows, down at the elbows, down in the world.    inglorious; nameless, renownless^†; obscure; unknown to fame; unnoticed, unnoted^†, unhonored, unglorified^†.    shameful; disgraceful, discreditable, disreputable; despicable; questionable; unbecoming, unworthy; derogatory; degrading, humiliating, infra dignitatem [Lat.], dedecorous^†; scandalous, infamous, too bad, unmentionable; ribald, opprobrious; errant, shocking, outrageous, notorious.    ignominious, scrubby, dirty, abject, vile, beggarly, pitiful, low, mean, shabby base etc. (dishonorable) 940.    ... show more

Roget 24: disagreeing etc. v.; discordant, discrepant; at variance, at war; hostile, antagonistic, repugnant, incompatible, irreconcilable, inconsistent with; unconformable, exceptional etc. 83; intrusive, incongruous; disproportionate, disproportionated^†; inharmonious, unharmonious^†; inconsonant, unconsonant^†; divergent, repugnant to.    inapt, unapt, inappropriate, improper; unsuited, unsuitable; inapplicable, not to the point; unfit, unfitting, unbefitting; unbecoming; illtimed, unseasonable, mal a propos [Fr.], inadmissible; inapposite etc. (irrelevant) 10.    uncongenial; ill-assorted, ill-sorted; mismatched, misjoined^†, misplaced, misclassified; unaccommodating, irreducible, incommensurable, uncommensurable^†; unsympathetic.    out of character, out of keeping, out of proportion, out of joint, out of tune, out of place, out of season, out of its element; at odds with, at variance with.    ... show more

Polish: nieobyczajny