keen
adjective
finely sharpened, as an edge; so shaped as to cut or pierce substances readily.
Used to express actions, events, or states that have not yet occurred but are expected to happen.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
I bethink me she must have come of a race strong of will, keen of intellect, and quick to learn.
From Maid Sally by Harriet A. Cheever