Synonyms for INAPPROPRIATE: unsuitable, improper, incorrect, wrong, unhappy, unfit, irrelevant, unfortunate; Antonyms of INAPPROPRIATE: appropriate, suitable, correct, proper, right, relevant, happy, fitting Define inappropriate. inappropriate synonyms, inappropriate pronunciation, inappropriate translation, English dictionary definition of inappropriate. adj. Unsuitable or improper. in′ap·pro′pri·ate·ly adv. in′ap·pro′pri·ate·ness n. American Heritage® Dictionary of the English Language, Fifth Edition. Use this word when something is not suitable or proper in a particular situation, especially in terms of behavior, language, or clothing. Her comment was considered inappropriate during the formal meeting. Wearing flip-flops to a job interview might be seen as inappropriate. Content that includes profanity, personal attacks or antisocial behavior (such as spamming or trolling ), or other inappropriate content or material will be removed. Something that is inappropriate is not useful or suitable for a particular situation or purpose. The industry is inappropriate to the region's present and future needs. There is no suggestion that clients have been sold inappropriate policies. INAPPROPRIATE definition: 1. unsuitable: 2. unsuitable: 3. unsuitable, esp. for the particular time, place, or situation. Learn more. The meaning of INAPPROPRIATE is not appropriate : unsuitable. How to use inappropriate in a sentence. Inappropriate refers to something that is not suitable or proper in the circumstances. It denotes behavior, language, action, or expression that is out of place, offensive, or violates certain social norms, standards, or rules of a given context. Inappropriate means something that is not suitable or proper in the circumstances. For example, wearing a casual t-shirt to a formal job interview is considered inappropriate because it does not match the expected level of formality. Find 77 different ways to say INAPPROPRIATE, along with antonyms, related words, and example sentences at Thesaurus.com.