Example : Her neat dress.
A neat room.

Synonyms : orderly

Example : Neat homework.
Neat handwriting.

Example : He landed a clean left on his opponent's cheek.
A clean throw.
The neat exactness of the surgeon's knife.

Synonyms : clean

Example : Too facile a solution for so complex a problem.
It was a neat plan, but bound to fail.
A slick advertising campaign.

Synonyms : facile, slick

Example : He did a bully job.
A neat sports car.
Had a great time at the party.
You look simply smashing.
We had a grand old time.

Synonyms : bang-up, bully, corking, cracking, dandy, great, groovy, keen, nifty, not bad, old, peachy, slap-up, smashing, swell

Example : Took his whiskey neat.

Synonyms : full-strength, straight