All properly antonyms
prop·er
P p adverb properly
- improperly — not proper; not strictly belonging, applicable, correct, etc.; erroneous: He drew improper conclusions from the scant evidence.
- incorrectly — not correct as to fact; inaccurate; wrong: an incorrect statement.
- faultily — In a faulty manner.
- indecently — offending against generally accepted standards of propriety or good taste; improper; vulgar: indecent jokes; indecent language; indecent behavior.