What does grump mean?
Grump is an informal word chiefly used as an adjective and noun. As an adjective, it describes someone who is chronically bad-tempered, easily annoyed, or inclined to complain; as a noun, it refers to such a person. The expression often suggests a settled temperament rather than a single burst of irritation, although it can humorously characterize someone who becomes grumpy only at particular times, such as before breakfast. In familiar contexts, the noun may be used teasingly or affectionately. Grump can also be an archaic verb meaning to complain or grunt, but that use now sounds dated in ordinary speech. The word is common in both British and American English and is often interchangeable with irritable, cross, cantankerous, or sulky, though grump generally has a less severe and more conversational tone.
Bad-tempered, irritable, or habitually inclined to complain.
"The grumpy clerk barely looked up from his desk."
Common in everyday speech and often less severe than cantankerous or surly.
A person who is habitually bad-tempered or easily annoyed.
"Our old neighbor was a cheerful grump who complained about everything."
Can be affectionate or teasing when used among friends or family.
To complain or express displeasure in a grumbling manner.
"He sat by the fire, grumping about the storm."
Archaic or literary in modern English.
The plural normally refers to more than one bad-tempered person.
"The two neighbors were complete grumps."
One compact word can name both the unpleasant person and the temperament that makes them difficult to be around.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does grump come from?
Grump appeared in English in the late 16th century, originally among words associated with grumbling or sulking. Its exact origin is uncertain, but it is commonly linked to the now obsolete grum, meaning sulky or morose, and to grumble. These related forms preserve the word's older associations with low sounds, complaint, and a sour or sullen mood.
Related word forms
How grump is actually used
In modern use, grump is an everyday, mildly informal word. As an adjective it suggests a habitual or persistent state rather than momentary anger; the noun can sound teasing or affectionate depending on context. The verb is archaic or literary.
Easily confused with grump
A grump is a bad-tempered person, whereas grumble is principally the noise or act of complaining dissatisfiedly.
A grouch is especially a person who complains or sulks, while grump more broadly denotes someone of a chronically irritable disposition.