optimism
Explanation:
optimism is not one of the Big five
sorry cant help.............................................
A three-dimensional space where an electron spends most of its time with no more than 1 other electron, forming a pair
Explanation:
1: This idiom is a descendant of the above. It chiefly means to go to bed in the sense of stopping the activity one has been doing for the night. (I'll answer all correctly if you mark me "brainlist", notify me if you choose.)