in a pleasingly orderly and clean condition

a neat room.

habitually orderly and clean in appearance or habits

a neat person.

of a simple, pleasing appearance, style, design, etc.

a neat cottage.

cleverly effective in character or execution

a neat scheme; a neat solution.

Slang . great; wonderful; fine

What a neat car!

clever, dexterous, or apt

She gave a neat characterization of the old woman.

straight ( def. 33 ) .

Building Trades .

(of cement) without sand or other aggregate.

(of plaster) without any admixture except hair or fiber.

net

neat profits.

Informal . neatly.