This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Not appropriate, attractive, or flattering: an unbecoming dress.

adj. Not in accord with the standards implied by one's character or position: conduct unbecoming an officer. See Synonyms at improper.

adj. Not flattering, attractive or appropriate.

adj. Not in keeping with the expected standards of one's position.

adj. Not becoming; unsuitable; unfit; indecorous; improper.

Not becoming; improper; indecent; indecorous.

Not befitting or suiting; not suitable or proper (for or in).

Not esthetically suited to the wearer, as an article of dress; not enhancing the beauty of its subject, as an attitude or a gesture.

n. A transition from existence into non-existence; dissolution.

adj. not in keeping with accepted standards of what is right or proper in polite society

"We are now resolved to expiate each and every deplorable outrage committed against Thee; we are determined to make amends for the manifold offenses against Christian modesty in unbecoming dress and behavior, for all the foul seductions laid to ensnare the feet of the innocent, for the frequent violations of Sundays and holy days, and the shocking blasphemies uttered against Thee and Thy saints."

improper   

becoming    befitting    suiting   

improper   

unbecomingness    unbecomingly   

unsuitable    unfit    indecorous    improper    unbeseeming    unseemly    unworthy    misbecoming    uncomely    unmeet   

becoming    coming    cumming    drumming    dumbing    forthcoming    humming    numbing    plumbing    strumming   

unseemly    inappropriate    disrespectful    unfair    indecorous    impertinent    indelicate    unwise    undignified    impolitic