inappropriately
UK: /ˌɪn.əˈprəʊ.pri.ət.li/ | US: /ˌɪn.əˈproʊ.pri.ət.li/
adv. in a manner unsuitable for the circumstances or context
adv. in a way that lacks proper correctness or acceptability
The word "inappropriately" is built from three clear morphemes. The prefix "in-" (from Latin) negates the root "appropriate," which derives from Latin "appropriatus" (to make one's own, suitable). The suffix "-ly" (Old English "-lice") converts the adjective into an adverb. The logical progression reflects a shift from suitability ("appropriate") to its opposite ("inappropriate") and finally to the adverbial form describing how an action is performed ("inappropriately").
He laughed inappropriately during the solemn ceremony.
The email was worded inappropriately for a professional setting.
She dressed inappropriately for the winter weather.
The teacher reprimanded the student for behaving inappropriately in class.
Using slang in a formal report is often viewed inappropriately.