Definitions for neatenˈnit n
Random House Webster's College Dictionary
to make neat.
Origin of neaten:
tidy, tidy up, clean up, neaten, straighten, straighten out, square away(verb)
put (things or places) in order
"Tidy up your room!"
care for one's external appearance
"He is always well-groomed"
To make neat; arrange in an orderly, tidy way; to tidy.
She made an attempt to neaten her hair.