To fail to satisfy the hope, desire, or expectation of.
To deprive of contentment; to make uneasy; to dissatisfy.
To fail to satisfy; make discontented; displease
(Intransitive) To reduce one's level of effort.
Find another word for disgruntle. In this page you can discover 5 synonyms, antonyms, idiomatic expressions, and related words for disgruntle, like: disappoint, discontent, dissatisfy, let down and happy.