it should be hyphenated: close-out
Yes it should be hyphenated.
It is not hyphenated.
The adverb "close by" is often seen as two words, and only one or two dictionary entries list it in a hyphenated form. In all cases, it means "nearby".
Motorcycle is not hyphenated
No it's not hyphenated.
words are only hyphenated when they have a separate meaning when separated than they do when hyphenated
No, "hardworking" is not hyphenated.
Yes it should be hyphenated.
It can be. Some words can be seen both hyphenated and non-hyphenated.
"Field" is not hyphenated.
No they shouldn't be hyphenated.