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.
No, "two thirds" should not be hyphenated. It is a compound adjective that functions as a single unit modifying a noun.
Yes, "subforeman" is typically not hyphenated. It is a compound word formed by combining the prefix "sub-" with the noun "foreman."
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, the noun short circuit (or short-circuit) is a compound noun; an open spaced or hyphenated compound noun (both are accepted).
Yes, mother-in-law is a hyphenated compound noun.
Yes, "weekend" is not typically hyphenated as it is considered a compound noun that does not require a hyphen.
No, "half sister" is not hyphenated. It is considered a compound noun and is typically written as two separate words. However, "half-sister" is hyphenated when used as a compound adjective before a noun, such as "my half-sister's birthday."
Yes, "low-to-intermediate" should be hyphenated when used as a compound modifier before a noun.
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
Whistle-blower.
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."