LIGHTHEARTED Meaning of LIGHTHEARTED in English [light.heart.ed] adj (15c) 1: free from care, anxiety, or seriousness: gay 2: cheerfully optimistic and hopeful: easygoing -- light.heart.ed.ly adv -- light.heart.ed.ness n Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012