eager ‘sharp, keen’
Lexical development traced from the Tamil root:
E. aeygre, eigre, aager < M.E. eegre, aygre, eiger < O.F. aigre ‘sour, acid; harsh, bitter, rough; eager greedy; lively, active, forceful’ < Vulgar Lat. *acrus < Lat. acer ‘keen, sharp, pointed, piercing; acute, ardent, zealous’ < eg < ak < Tamil akku
Other meaning: impatiently longing to do or obtain something.