Behavior or attitude characteristic of a curmudgeon; grumpiness, crankiness, or miserly conduct.
From 'curmudgeon' (noun) plus '-ery' (suffix forming nouns denoting behavior or practice), creating a word for curmudgeon-like behavior in general.
The '-ery' suffix is brilliant for turning nouns into abstract concepts about how those people act—'curmudgeonery' captures an entire attitude and lifestyle of grumpiness in one word!
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