The phrase "colourful language" means using words or expressions that are vivid, strong, or inappropriate to express oneself.
Sentences with «colourful language»
The creative use of colourful language can often be the difference that influences a listener, or listeners, to get the point. (remonline.com)
But it turns out that she is not the only shadow cabinet member with a penchant for using colourful language to dismiss a key plank of Labour policy. (totalpolitics.com)
(I had to cut the sound to this video due to my very colourful language) What an amazing world we live in So stylish! (travelandleisure.com)