If you mean the word for 19, then there is no hyphen and it is nineteen, not nine-teen.
No, a hyphen is not needed.
No, a hyphen is not needed.
no
The correct spelling of hyphen is nephyh
I do not believe that multitasking is supposed to have a hyphen.
a hyphen connects two words, a dash gives a pause between two words....
Yes. In-between requires a hyphen.
No it shouldn't be hyphenated.
No, faux pas doesn't require a hyphen.
No, I think it's just "Start up". It may be used with a hyphen but not usually.
line up