inappropriate

The word "appropriate" means correct or proper and since the little prefix "in" turns its meaning around, something inappropriate is considered not proper or suitable.

Nowadays, it seems, anything goes. Yet good manners and standards prevail, and some things are simply inappropriate — such as taking a toddler to a violent movie, or making jokes at someone else's expense. You wouldn't show your future father-in-law naked pictures of his daughter or wear a bathing suit to a state dinner. Those actions are simply inappropriate.

DEFINITIONS OF: inappropriate

1

adj not suitable for a particular occasion etc

“noise seems inappropriate at a time of sadness”
inappropriate shoes for a walk on the beach”
“put inappropriate pressure on them”
Synonyms
unbefitting
not befitting
improper, wrong
not appropriate for a purpose or occasion
malapropos
of an inappropriate or incorrectly applied nature
improper
not suitable or right or appropriate
Antonyms:
appropriate
suitable for a particular person or place or condition etc
befitting
appropriate to
grade-appropriate
the quality of ability and work that is appropriate for students in a specified grade
pat
exactly suited to the occasion
proper, right
appropriate for a condition or purpose or occasion or a person's character, needs
apropos
of an appropriate or pertinent nature
proper
marked by suitability or rightness or appropriateness
show more antonyms...

adj not in keeping with what is correct or proper

“completely inappropriate behavior”
Synonyms:
incompatible, out or keeping, unfitting
incongruous
lacking in harmony or compatibility or appropriateness
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