slightly improper to dine alone with a married man.
improper medication.
improper attire for the golf course.
Examples of improper
improper
At issue is whether improper paperwork taints tens of thousands of foreclosures.
From the online.wsj.com
For starters, no one asserts that the Fed has done anything illegal or improper.
From the sacbee.com
He wrote us a ticket for an improper left turn on Orme and Rock Road on Dec. 18.
From the kansas.com
His lenders say he ran the Cal Neva down and siphoned off cash for improper use.
From the sacbee.com
Southern Cal said it did not know about Bush and Mayo getting improper benefits.
From the kentucky.com
School officials have said any improper manipulation of the rosters has stopped.
From the suntimes.com
So far, all White House officials have said is that nothing improper took place.
From the post-gazette.com
Was it improper to point out he had been a county supervisor and an assemblyman?
From the ocregister.com
He was suspended from the Sugar Bowl for having improper dealings with an agent.
From the buffalonews.com
More examples
Not suitable or right or appropriate; "slightly improper to dine alone with a married man"; "improper medication"; "improper attire for the golf course"
Not conforming to legality, moral law, or social convention; "an unconventional marriage"; "improper banking practices"
Not appropriate for a purpose or occasion; "said all the wrong things"
To appropriate; To behave improperly; unsuitable to needs or circumstances; inappropriate; Not in keeping with conventional mores or good manners; indecent or immodest; Not according to facts; inaccurate or erroneous; Not consistent with established facts; incorrect; Not properly named; See, ...
Not appropriate, suitable, or becoming (Sept. 2010)
In sets with mostly mixed-gender couples, lining up for a contra dance so that in each couple the men are on the left and the women are on the right as they face the other couple. ...