ungentlemanly

an ungentlemanly lack of sportsmanship.

He was in disgrace after his ungentlemanly behavior.

His ungentlemanly attempts to discredit the sale of drugs by his professional brethren would by-and-by recoil on himself.

His behavior was deemed ungentlemanly by the guests.

It is considered ungentlemanly to speak ill of others behind their backs.

He showed his ungentlemanly side when he refused to pay for the meal.

Making fun of someone's appearance is ungentlemanly.

His ungentlemanly behavior was a major turn-off for her.

It is ungentlemanly to interrupt someone while they are speaking.

He was criticized for his ungentlemanly conduct during the meeting.

She found his ungentlemanly manners to be quite off-putting.

His ungentlemanly remarks caused quite a stir at the party.

Behaving in an ungentlemanly manner is never acceptable.

But I know...-You will not be deprived of your livelihood because I behaved in an ungentlemanly manner.

It is a very ungentlemanly thing to read a private cigarette case.

They found the whole room a mass of blue—vases and jugs—and the story ends with 'So ungentlemanly and yet so beautiful'.

He reflected, with much probability on his side, that Lydgate would by-and-by be caught tripping too, and that his ungentlemanly attempts to discredit the sale of drugs by his professional brethren, would by-and-by recoil on himself.