Origin of neato
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Related Words for neatosterling, estimable, admirable, meritorious, excellent, honorable, commendable, laudable, typical, blameless, characteristic, classic, classical, correct, good, guiltless, illustrative, inculpable, innocent, irreproachable
by 1968, American English teenager slang variant of neat (adj.) in its slang sense.
Online Etymology Dictionary, © 2010 Douglas Harper