Synonyms and antonyms of Ways of saying someone is stupid or silly in British Thesaurus

grow up (spoken)

spoken used for telling someone to stop being silly and behaving like a child

don’t encourage someone ()

used for telling other people that you think that someone is being silly

what is he/she playing at? ()

used when you think that someone is behaving in a stupid or dishonest way

act/be your age ()

used for telling someone that they are behaving in a stupid way, as if they were much younger than they really are

someone must be mad (to do something) ()

used for saying that someone is doing something very stupid, or has done something very stupid

be serious ()

used for telling someone that you think what they are saying is not sensible

do me/us a favour ()

used for showing that you think that someone has said or done something silly or annoying

get real ()

used for telling someone to start considering something in a sensible way and stop being silly or unreasonable about it

(the) more fool you/him/her etc ()

used for saying that you think someone is doing something stupid

if you believe that, you’ll believe anything ()

used for telling someone that they are stupid to believe something

be unfortunate/unlucky/unwise/stupid etc enough to do something ()

used after adjectives that mean ‘stupid’ or ‘not lucky’ for saying that someone does something stupid or that something bad happens to them

duh (interjection)

informal used for saying that you think something that someone has said or done is stupid

go and do something ()

used for saying that someone has done something silly or annoying

God bless someone (humorous)

humorous used when you are talking in a friendly way about the silly or wrong things that someone does

hello (interjection)

very informal used for saying that you think someone is not being very sensible or is not paying attention to what is happening

the joke is on someone ()

used for saying that someone who was trying to make you seem silly has made themselves look silly

please (interjection)

used for saying that you think someone has said something silly

silly (noun)

used for telling someone, especially a child, that you think their behaviour is stupid or annoying

that’s right ()

used for emphasizing that you think someone is behaving in an unreasonable way

there’s one born every minute ()

used for saying that someone has been very stupid, especially because they have been tricked into doing something