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

• Lexulous
• Wordscraper
• Wordosaur

adj. Not suited to circumstances or needs; unsuitable: improper shoes for a hike; improper medical treatment.

adj. Not in keeping with conventional mores; indecorous: improper behavior.

adj. Not consistent with established truth, fact, or rule; incorrect.

adj. Irregular or abnormal.

adj. unsuitable to needs or circumstances; inappropriate; inapt

adj. Not in keeping with conventional mores or good manners; indecent or immodest

adj. Not according to facts; inaccurate or erroneous

adj. Not consistent with established facts; incorrect

adj. Not properly named; See, for example, improper fraction

v. To appropriate; to limit.

v. To behave improperly

adj. Not proper; not suitable; not fitted to the circumstances, design, or end; unfit; not becoming; incongruous; inappropriate; indecent

adj. Not peculiar or appropriate to individuals; general; common.

adj. Not according to facts; inaccurate; erroneous.

v. To appropriate; to limit.

Not proper or peculiar to any individual; general; common.

Not of a proper kind or quality; not adapted to or suitable for the purpose or the circumstances; unfit; unbecoming; indecorous: as, an improper medicine; an improper appointment; improper conduct or language.

Not proper in form or method; not according to nature, truth, rule, or usage; abnormal; irregular; erroneous: as, improper development; improper fractions; improper pronunciation; an improper use of words.

To impropriate.

adj. not suitable or right or appropriate

adj. not appropriate for a purpose or occasion

adj. not conforming to legality, moral law, or social convention

"In a tearful news conference, Kosako said he could not stay and allow the government to set what he called improper radiation limits of 20 millisieverts a year for elementary schools in areas near the plant."

unbecoming    untoward    out-of-the-way    uncomely    unseemly    wrong    indecorous    incorrect    indecent    inappropriate   

proper    appropriate    timely    becoming   

indecent    improper conversion    improper fraction   

unfit    incongruous    inappropriate    indecent    general    common    inaccurate    erroneous    appropriate    limit   

Cropper    Hopper    Popper    bopper    chopper    copper    cropper    dropper    hopper    popper   

unfair    inappropriate    immoral    indecent    illegal    absurd    unreasonable    proper    unwise    incorrect