← BackshareGuessspleenier/ˈspliːniər/adjectiveMore irritable, bad-tempered, or spiteful.After losing the game, he became even spleenier than usual.Her spleenier comments during the meeting surprised everyone.The old cat grew spleenier with age, hissing at anyone who came near.SynonymsirritablecrankygrumpyAntonymscheerfulpleasant