IPA: /ˈniːtə/
KK: /nitɚ/
More organized and tidy than something else.
Her room is neater than mine after she cleaned it.
Neater → It is formed from "neat" (from Old English *neat*, meaning tidy or clean) and the suffix "-er" (meaning one who or more). The word "neater" means one who is more tidy or clean than another.
Think of someone who is 'more tidy' — 'neat' describes being tidy, and '-er' indicates a comparison, so 'neater' means someone who is tidier.