The term "multi-year" is typically hyphenated when used as a compound adjective before a noun, such as in "multi-year contract." However, it can appear as two separate words, "multi year," when used in other contexts. Always consider the specific usage and style guidelines you are following.
The spelling of the adjective is hyphenated "multi-year."(Only Wiktionary shows a single word, unhyphenated form.)
Hyphenated
The word is spelled as one word "multitasking" but is occasionally seen hyphenated as in (multi-tasking).
Yes, "multi-purpose room" should be hyphenated. The hyphen connects "multi" and "purpose," indicating that the room serves multiple purposes. Without the hyphen, the meaning may become unclear, as it could be misinterpreted as a room that is simply "multi" and "purpose." Therefore, for clarity and correctness, it's best to use the hyphen.
No, "year long" is not hyphenated when used as an adverbial phrase, such as "The project will last year long." However, when used as a compound adjective before a noun, it should be hyphenated, as in "a year-long project."
Yes, "five-year" is hyphenated when used as a compound adjective before a noun, such as in "five-year plan." However, when it stands alone as a noun, it is not hyphenated, as in "The plan lasts five years."
No, "multinational" is not hyphenated. It is a single word used to describe entities, such as corporations or organizations, that operate in multiple countries. The prefix "multi-" combines with "national" without the need for a hyphen.
Yes, it should be hyphenated like so: sixteen-year-old boys.
The term "year to date" is typically not hyphenated when used in a sentence. However, when it functions as a compound adjective before a noun, it can be hyphenated as "year-to-date." For example, you would write, "The year-to-date results are impressive," but simply "The results are year to date."
It should be hyphenated if used as a noun clause, but not if used as an adjective
Yes, "year after year" should be hyphenated when used as a compound adjective before a noun (e.g., year-after-year performance). However, it is not hyphenated when used as an adverbial phrase (e.g., they met year after year).
Yes, when used as an adjective. Year-to-year is hyphenated when used as an adjective: year-to-year comparison, year-to-year budget. Year to year is not hyphenated when it is used as a time period: We come back to this same beach year to year.