The story
- Middle English · inherited fromlyght hertyd
- English todaylighthearted
From Middle English lyght hertyd, liȝt-hertid, from light (adjective) + herted, hertid (“having a disposition”, adjective) (equivalent to light + hearted), from the noun herte. See more at light, heart, -ed.
Etymology from Wiktionary, CC BY-SA 4.0.