IPA: /ˈmʌmpɪʃ/
KK: /ˈmʌmpɪʃ/
Feeling or showing a gloomy or sulky attitude; being in a bad mood.
After losing the game, he sat in a mumpish silence, refusing to talk to anyone.
Mumpish → This word originates from the dialectal English 'mump', meaning to sulk or pout. The term describes a person who is sullen or moody, often in a silent or withdrawn manner.
Think of someone who is 'sulking' or 'pouting' — that's what mumpish means, describing a person who is in a gloomy or moody state.