[{"Bold_text": "verb (used without object)", "List Items": ["to move with a sinuous or wavelike motion; display a smooth rising-and-falling or side-to-side alternation of movement:The flag undulates in the breeze.", "to have a wavy form or surface; bend with successive curves in alternate directions.", "(of a sound) to rise and fall in pitch:the wail of a siren undulating in the distance."]}, {"Bold_text": "verb (used with object)", "List Items": ["to cause to move in waves.", "to give a wavy form to."]}, {"Bold_text": "adjective", "List Items": ["Alsoun·du·lat·ed.having a wavelike or rippled form, surface, edge, etc.; wavy ."]}]