as in nifty and clever.
American expressions seem to have migrated over here too - grins.
Cookie being another. We use the term 'smart cookie ' over here, meaning quick witted and bright, but don't use the word cookie in its other context. Bizarrely, what you call cookies, we call biscuits, what you call biscuits we call scones.
Language is so fascinating, how it travels, changes, develops and morphs.
Over in UK, we have so many American TV progs, films, documentaries etc that 'American English' is entirely natural to quite a few. Microsoft and other computer giants probably have a lot to answer to in that respect, as spelling checks etc are by default in American English. We usually have to go and reset to get an English UK dictionary/spell check. It gets interesting when it's mixed with local dialect and expressions though. Some UK dialects and accents are hard to understand even within Britain.
There are certain words that have a massive difference in meaning, I'm thinking of what you call an eraser, lol,we call it a rubber. An American friend when she was visiting, struggled a little with that one. More grins.
Anyway back to original meaning of neat. I meant it in its American context, but thinking about it, its tidy context works too.
Jxx