sobersides
Humorless, grave person
A sobersides is a habitually serious or solemn person—someone who rarely jokes or shows levity.
The word is mildly teasing rather than harsh, suggesting the person could lighten up: Don't be such a sobersides; it's a party.
The term is somewhat old-fashioned but still understood.
Not showing amusement
- mirthlessLacking genuine amusement
- joylessWithout pleasure or gladness
- cheerlessDevoid of mirth
- straight-facedWithout visible emotion
poker-faced · deadpan · stony-faced · grim · frowning · scowling · glowering · dour
Sincerely intense in purpose
- graveSerious and worrying
- solemnSerious and dignified
- sedateCalm and unhurried
- staidSerious and conventional
somber · pensive · thoughtful · dignified · composed · levelheaded · sensible · prudent
Strict or ship's aft
- austereSeverely simple and unadorned
- severeExtremely harsh or strict
- rigidUnable to bend
- inflexibleUnable to bend
disciplinarian · authoritarian · demanding · exacting · uncompromising · puritanical · spartan · ascetic
unsmiling
Not showing amusement
straight-faced · poker-faced · deadpan · stony-faced · grim · frowning · scowling · glowering · dour · glum
earnest
Sincerely intense in purpose
staid · somber · pensive · thoughtful · dignified · composed · levelheaded · sensible · prudent · judicious
stern
Strict or ship's aft
inflexible · disciplinarian · authoritarian · demanding · exacting · uncompromising · puritanical · spartan · ascetic · abstemious
sobersidesbon vivant
Connoisseur of life's pleasures
reveler · live wire · carouser · hellion · wild child