adjective/a.lɛɡʁ/
joyful, happy
Related: allègrement
Inherited from Old French halaigre, from Latin alacrem (“lively; happy, joyful”). The Old French form alegre derived from a Vulgar Latin form *alacrum, and the form (h)aliegre from an *alĕcrum. The transition of Latin -cr- to French -gr- is paralleled in aigre, maigre; it may have been influenced partly by Old Occitan alegre. Doublet of allegro. More at Italian allegro.