A more thorough explanation:

Definition: Neat is an adjective that means clean and free from any unwanted or unnecessary substances.

Examples:

• After cleaning the kitchen, it looked neat and tidy.
• The doctor's handwriting was so neat that it was easy to read.
• She neatly folded the clothes and put them away in the closet.

The examples illustrate how neat refers to something that is clean and free from any unwanted substances. In the first example, the kitchen is clean and tidy, which makes it neat. In the second example, the doctor's handwriting is clean and easy to read, which makes it neat. In the third example, the clothes are folded in a clean and organized manner, which makes them neat.