Synonyms and antonyms of Serious and humourless in British Thesaurus

serious (adjective)

meaning what you say or do, and not making a joke

humourless (adjective)

unable to see when something is funny, usually because of being too serious

substantial (adjective)

dealing with important ideas in a serious way

sober (adjective)

with a serious attitude

solemn (adjective)

involving serious behaviour or serious attitudes

stolid (adjective)

acting or thinking in a slow serious manner

deep (adjective)

someone who is deep has very serious thoughts, ideas, or feelings

funereal (adjective)

very slow or serious

religiously (adverb)

if you do something religiously, you do it regularly and are very serious about it

seriously (adverb)

in a way that shows that you think something is important

a sense of humour failure ()

a situation in which you are unable to see that something is funny

for real ()

if something is for real, you are doing it seriously, not just practising or pretending

humorless ()

the American spelling of humourless

in earnest ()

serious and meaning what you say

lighten up (informal)

informal used for telling someone to be less serious

officious (adjective)

showing disapproval showing an annoying tendency to take your position or status too seriously

po-faced (adjective)

Britishinformal someone who is po-faced does not smile and looks as if they do not approve of what is happening, especially when other people are having fun

serious (adjective)

someone who is serious thinks carefully about things and does not laugh much

serious (adjective)

dealing with important, complicated, or difficult ideas or subjects

staid (adjective)

serious and rather boring