Answer:

keener

Answer	Crossword Clue
KEENER	Better honed
KEENER	Catherine of "Full Frontal"
KEENER	More mentally alert

KEENER	Sharper, as eyes
KEENER	More perspicacious
KEENER	Comparatively quick-witted
KEENER	More eager
KEENER	Sharper
KEENER	Less dull
KEENER	Sharper, as vision
KEENER	More intense

KEENER	More astute
KEENER	"Being John Malkovich" actress
KEENER	Not as dull
KEENER	More incisive.
KEENER	Professional mourner.
KEENER	More acute.
KEENER	Sharper.
KEENER	More enthusiastic.

KEENER	Less obtuse.
KEENER	Shriller.
KEENER	Finer honed.
KEENER	More piercing
KEENER	Not so obtuse
KEENER	Not so blunt
KEENER	Not so dull
KEENER	More acute

KEENER	More penetrating
KEENER	Mourner
KEENER	Less obtuse
KEENER	One who wails
KEENER	More anxious
KEENER	Comparatively shrewd
KEENER	More gung-ho
KEENER	More interested

KEENER	Showing more enthusiasm
KEENER	More perceptive
KEENER	More enthusiastic
KEENER	More zealous
KEENER	More discerning