There are no specific rules on forming compound nouns. Hyphens are often used to reduce confusion in a sentence. For example, the compound noun 'wire clip' is perfectly acceptable as a compound noun, but for a term like 'plastic wire-clip', the hyphen makes it more readable. The compound word is correct with or without the hyphen.
Some examples of hyphenated compound nouns are:
A-frame
about-face
ad-lib
African-American
break-in
brother-in-law
cover-up
ex-husband
father-in-law
get-together
great-grandmother
half-sister
know-how
ne'er-do-well
nitty-gritty
passer-by
president-elect
self-assurance
self-help
six-pack
sixty-six
T-shirt (or tee-shirt)
V-neck
voice-over
warm-up
well-being
x-ray
Yes, "weekend" is not typically hyphenated as it is considered a compound noun that does not require a hyphen.
Yes, "low-to-intermediate" should be hyphenated when used as a compound modifier before a noun.
Yes, "subforeman" is typically not hyphenated. It is a compound word formed by combining the prefix "sub-" with the noun "foreman."
No, "two thirds" should not be hyphenated. It is a compound adjective that functions as a single unit modifying a noun.
Left-handed is a hyphenated compound.
No, "jet stream" is not typically hyphenated when used as a compound noun.
The noun rowboat is a closed compound.
Yes, mother-in-law is a hyphenated compound noun.
Yes, the noun short circuit (or short-circuit) is a compound noun; an open spaced or hyphenated compound noun (both are accepted).
Yes, "weekend" is not typically hyphenated as it is considered a compound noun that does not require a hyphen.
Yes, "low-to-intermediate" should be hyphenated when used as a compound modifier before a noun.
Whistle-blower.
There are three types of compound noun; closed (bathtub), hyphenated (fifty-five), and open spaced; examples of open spaced compound nouns are:back yardblack birdbumble beebus stopfront doorhome platehot platepet shopquestion markshoe storetennis shoewindow pane
No, the correct plural is fathers-in-law, a hyphenated compound noun.
The compound noun 'tryout' is written as either a single word or a hyphenated word, 'try-out'. Either is acceptable.
Yes, "highly organized" is hyphenated when used as a compound adjective before a noun, as in "highly-organized event." However, when used after the noun, it is typically not hyphenated, as in "The event was highly organized."
No, "world leader" is not hyphenated. It is typically written as two separate words when used as a noun phrase. However, if used as a compound adjective before a noun, it can be hyphenated as "world-leader status."