An artificial intelligence researcher who believes that solutions should be elegant, clear and provably correct. Compare scruffy.

Clean, tidy; free from dirt or impurities.

“My room is neat because I tidied it this morning.  She has very neat hair.”

Free from contaminants; unadulterated, undiluted. Particularly of liquor and cocktails; see usage below.

“I like my whisky neat.”

Conditions with a liquid reagent or gas performed with no standard solvent or cosolvent.

“The Arbuzov reaction is performed by adding the bromide to the phosphite, neat.  The molecular beam was neat acetylene.”