Yes, "54-mile" would be hyphenated when used as an adjective to describe a noun, such as "54-mile race."
Yes, "in-progress" is often hyphenated when used as a compound adjective.
Yes, "hard worker" should be hyphenated when used as an adjective before a noun, as in "She is a hard-worker."
Yes, "form-fitting" is hyphenated when used as an adjective to describe clothing that fits closely to the body.
No, "two thirds" should not be hyphenated. It is a compound adjective that functions as a single unit modifying a noun.
Yes, back-to-school is hyphenated when used as an adjective phrase before a noun, such as "back-to-school shopping."
The adjective "hand-painted" uses the hyphenated form.
It should be hyphenated when it's used as an adjective.
Yes, "in-progress" is often hyphenated when used as a compound adjective.
No, "miles per hour" is not hyphenated. It is written as three separate words.
It should be hyphenated if used as a noun clause, but not if used as an adjective
No, "deadline driven" is typically not hyphenated. It is used as a compound adjective where "deadline" modifies "driven." However, if used before a noun as an adjective (e.g., "deadline-driven project"), it is often hyphenated for clarity.
Yes, "ultra-violet" is typically hyphenated when used as an adjective before a noun.
There is no general rule.
Hot-head.
Yes, "ordinary-looking" is a hyphenated adjective. The two words do not separately modify the subject.
Yes, "special-needs" is a hyphenated adjective. The two words do not separately modify the subject.
It is a hyphenated adjective, life-giving.