IPA: /dɪsˈɡrʌn.təl/
KK: /dɪsˈɡrʌn.təl/
To make someone unhappy or dissatisfied with something.
The changes in the company policy disgruntled many employees.
Past: disgruntled
Past Participle: disgruntled
Disgruntle is formed from "dis-" (meaning apart or away) and "gruntle" (which is a variant of the Middle English word "gruntlen", meaning to grumble or complain). The word describes the state of being unhappy or dissatisfied, as if one is pushed away from contentment.
Think of being 'pushed away' ('dis-') from a state of 'grumbling' or 'complaining' ('gruntle'). This helps you remember that to disgruntle means to make someone unhappy or dissatisfied.