loony C2 Topic:People & Society US /ˈluːni/ UK /ˈluːni/ See IPA manual Freq #13108 Meanings 1 noun informal and potentially offensive: a person regarded as foolish, eccentric, or mentally unstable The comedy portrays him as a harmless loony with elaborate theories. Thesaurus Synonyms 1 noun · informal and potentially... eccentricmadcap Word family Derived forms loonilylooninessloonytarianloonytarianismmaniloony Related forms lunacy Etymology Shortened from lunatic, and likely also from loon ("rascal", and also the bird) + -y. Topics People & Society Word Formation & Derivatives Register & Style External links Google Images Cambridge Dictionary Wiktionary # loony **Type:** Word **Level:** C2 **Part of speech:** noun **IPA (US):** /ˈluːni/ **IPA (UK):** /ˈluːni/ **Frequency rank:** 13108 ## Meanings 1. informal and potentially offensive: a person regarded as foolish, eccentric, or mentally unstable ## Examples - The comedy portrays him as a harmless loony with elaborate theories. ## Synonyms - eccentric - madcap ## Derived Forms - loonily - looniness - loonytarian - loonytarianism - maniloony ## Related Forms - lunacy ## Etymology Shortened from lunatic, and likely also from loon ("rascal", and also the bird) + -y. ## Topics - People & Society - Word Formation & Derivatives - Register & Style markdown