Natty
来自Big Physics
late 18th century (originally slang): perhaps related to neat1.
wiktionary
Originally slang, perhaps related to neat. [1]
Variant of knotty. [1]
Clipping of natural + -y. Clipping of national + -y.
etymonline
natty (adj.)
1785, "neat, smart, tidy," originally slang, perhaps an altered form of 16c. nettie "neat, natty," from Middle English net "pure, fine, elegant" (see neat (adj.)). Related: Nattily; nattiness.
