In young people's slang, especially in the US: really good, desirable, or successful; extremely 'neat'. Etymology: Formed by adding the suffix -o (here intensifying the force of the adjective) to neat in its colloquial sense 'excellent, desirable'. History and Usage: Neato was in spoken use in the late sixties, but became a particularly fashionable term of approval among young people in the late seventies and early eighties. It was at this time that it also spread outside the US to other English-speaking countries. We would probably never have heard of Peter Wagschal, or of his neato Ouija Board Studies Program, if it hadn't been for one Larry Zenke, a pretty neato guy himself. Underground Grammarian Jan. 1982, p. 1 Those were the days when Beaver used to...have what she calls 'a neato free time'. More (New Zealand) Feb. 1986, p. 49
NEATO ADJECTIVE (YOUTH CULTURE)
Meaning of NEATO ADJECTIVE (YOUTH CULTURE) in English
English colloquial dictionary, new words. Английский разговорный словарь - новые слова. 2012