the.com/grouchiness

The art of being right while sounding insufferable about it.

means A persistent, irritable state of complaint and bad temper, often over small things.

from From 'grouch,' which emerged in late 19th-century American English, likely a variant of the older dialect word 'grutch' meaning to grumble or complain — itself descended from Old French 'groucier,' to murmur or grumble. The '-iness' just bolts on the condition, turning a mood into a permanent personality trait.

root cause
Usually hunger, fatigue, or unmet expectations in disguise
social function
Keeps needy people at a safe distance
peak hours
Mornings, before coffee restores basic diplomacy
secret truth
Often just honesty without the polite packaging
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