His two roommates are both pretty 'neat' people. [=they both like to have things cleaned up and put away]
Try to be a little 'neater' [=try not to make such a mess] the next time you bake cookies.
I think it's a 'neat' idea [=a good idea] to invite the new neighbors to the cookout.
(..) Thank you, Sheldon. You're welcome. And if he has twins, we can do all kinds of neat experiments on them. You guys can go in if you want. No, we're a team. If you can't go in, we're not going in. (..)2016 TvShow: The Big Bang Theory Title: The Positive Negative Reaction Season: 9 Episode 16