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.
It simply depends on what the proper nouns in question are. For example, if it's a joined last name, like Rodriguez-Jones, then of course it's hyphenated. It has nothing to do with whether or not it's a proper noun.
The number 46 is spelled "forty six", normally hyphenated as "forty-six".
The word "not" is typically not capitalized in a title unless it is the first word, a proper noun, or part of a hyphenated word.
No, "self-interest" is typically not hyphenated.
Yes, "self-diagnose" is hyphenated.
It is hyphenated.... re-evaluate
The phrase is two words, counter offer (counter being a noun adjunct).This does not mean that it does not often appear as a single word, counteroffer -- only that this use is, at present, erroneous English.
followup This word spelled as is does not come up on Answers.com spell check. Followup is not hyphenated.
The spelling is polka-dotted (hyphenated as an adjective).
The usual spelling is hyphenated as "check-in" (registration).
It simply depends on what the proper nouns in question are. For example, if it's a joined last name, like Rodriguez-Jones, then of course it's hyphenated. It has nothing to do with whether or not it's a proper noun.
Ordinarily it is spelled as the hyphenated form "post-secondary."
Although it is seen hyphenated, the spelling "nonbusiness" is acceptable.
The hyphenated version "non-driven" is correct.
The number (45) is hyphenated as an adjective: forty-five.
The spelling is hyphenated, "forget-me-not" (Myosotis alpestris).
The word is spelled re-occurrence (re·oc·cur·rence). It is a hyphenated word.