indecorous, improper, unseemly, unbecoming, indelicate mean not conforming to what is accepted as right, fitting, or in good taste. indecorous suggests a violation of accepted …

Improper definition: not proper; not strictly belonging, applicable, correct, etc.; erroneous.. See examples of IMPROPER used in a sentence.

improper adjective (WRONG) not suitable or correct for a particular use or situation: an improper choice of words

Find 792 different ways to say IMPROPER, along with antonyms, related words, and example sentences at Thesaurus.com.

If you describe someone's behaviour as improper, you mean that it is rude or shocking.

Definition of improper adjective from the Oxford Advanced Learner's Dictionary. dishonest, or morally wrong. He had been indulging in improper business practices. She was suspended for …

1. not proper; not strictly belonging, applicable, or correct: drew improper conclusions. 2. not in accordance with propriety or regulations: improper conduct. 3. abnormal; irregular.

How does the adjective improper differ from other similar words? Some common synonyms of improper are indecorous, indelicate, unbecoming, and unseemly.

unsuitable or inappropriate, as for the purpose or occasion: improper attire for a formal dance. abnormal or irregular: improper functioning of the speech mechanism.

Sep 23, 2025 · improper (comparative more improper, superlative most improper) Unsuitable to needs or circumstances; inappropriate; inapt. Not in keeping with conventional mores or good …