No, I think it's just "Start up". It may be used with a hyphen but not usually.
It is acceptable to spell "nonviolence" both with and without a hyphen.
hyphen
There is a silent P at the start of the 45 letter word:pneumonoultramicroscopic-silicovolcanoconiosis (no hyphen).
no
Without a hyphen
When it's used as a verb, spell it as follow up (no hyphen). When it's used as a noun or adjective, there is a hyphen (follow-up). Go to dictionary.com. In the Dictionary tab, type in the words 'follow up' without the hyphen. This will help you a lot.
The correct spelling is 'hyphen'.
It needs a hyphen: pre-indictment
Yes, it is correct to spell "counter-proposal" with a hyphen. This helps to clarify that it is a compound word made up of two separate words.
multi-task or Multitask -the hyphen is not necessary-
The punctuation mark similar to a dash is spelled hyphen(-).
Tumblr URLs can't start or end with a hyphen.