Eager
of eagre. Sharp, keen, acid; the French aigre. (Latin, crude form, acr- “acer,” sharp.)
“It doth posset
And curd, like eager droppings into milk.”
Shakespeare: Hamlet, i. 5.
“Vex him with eager words.”
Shakespeare: Henry VI., ii. 4.
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Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.