懒洋洋

ABB pattern adjective: 懒 ('lazy') + reduplicated 洋洋 = a vivid descriptive form. The reduplicated suffix 洋洋 also appears in 喜洋洋 ('cheerful'), 暖洋洋 ('pleasantly warm'), 得意洋洋 ('smugly pleased') — it's a productive intensifier suggesting an overflowing, pervasive quality.

usage

Almost always used as a manner adverb with 地: 懒洋洋地躺 ('lying lazily'), 懒洋洋地走 ('walking lazily'). The standard reading is lǎn yāng yāng with first-tone reduplication, though casual speech often softens to lǎn yáng yáng.