This post will show you one of the most common English idioms: Wet Blanket. Learning to use common idioms and expressions will make your English sound more native, so let’s learn the idiom below.
dull or boring person who spoils the happiness of others
James was not invited to go on the outing with the rest of the group because he’s such a wet blanket. On many previous occasions he has kept others from enjoying themselves by his pessimism and lack of enthusiasm. It’s understandable that no one wants him around.