ruffian|ruffians

那个小淘气总是把玩具扔得到处都是。

That little ___ruffian keeps throwing toys all over the place.

那些流氓砸碎了商店的橱窗并威胁店主。

The ___ruffians smashed the store windows and threatened the owner.

那个暴徒在街上威胁路人，抢走了他们的钱包。

The ___ruffian threatened people on the street and stole their wallets.