the.com/grump

Someone who treats mild inconvenience as a personal betrayal by the universe.

means A person prone to sulky irritability, or the bad mood itself.

from Likely imitative in origin — a grunt-like, guttural sound meant to echo the noise of complaint itself. It surfaces in English around the 1700s, first as 'grumps,' meaning a fit of ill temper, before settling into the person who has one. It runs alongside cousins like 'grumble' and 'grouch,' part of a little family of words that just sound like their meaning — low, nasal, dissatisfied noises turned into vocabulary.

origin
18th century, imitative of a grunt or snort
related
grumpy added the cheerful suffix later
secret
often just a softie with bad PR
fictional icon
Oscar the Grouch, trash can diplomat
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