Answer:

keen

Answer	Crossword Clue
KEEN	Intellectually sharp
KEEN	Loud wail
KEEN	Sharp

KEEN	Peachy-..
KEEN	Sharp as a tack
KEEN	Sharp-edged
KEEN	Splendid, slangily
KEEN	Discerning
KEEN	Astute
KEEN	Fresh from honing
KEEN	Blunt's antonym

KEEN	Perceptive
KEEN	Acute
KEEN	Nifty
KEEN	Enthusiastic
KEEN	Old-school "rad"
KEEN	With hot enthusiasm
KEEN	Razor-sharp
KEEN	Zealous

KEEN	Acute, as vision
KEEN	"Peachy-..!"
KEEN	Mentally adept
KEEN	Neato
KEEN	Finely honed
KEEN	Mentally acute
KEEN	Very sharp, as wit
KEEN	Insightful

KEEN	Quick-witted
KEEN	"Neato!"
KEEN	Like an eagle's vision
KEEN	Finely sharpened
KEEN	Gung-ho
KEEN	Not dull
KEEN	Eager or enthusiastic
KEEN	Fierce, like competition

KEEN	Peachy follower
KEEN	Wail
KEEN	Eager
KEEN	Very sensitive
KEEN	Avid

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.