However, there are some exceptions:
* Compound words: When "laugh" is used as part of a compound word, it might be hyphenated, depending on the specific word and context. Examples include "laugh-track," "laugh-riot," and "laugh-a-minute."
* Phrases: Sometimes, "laugh" might be hyphenated in phrases to avoid confusion or ambiguity. For example, "a laugh-out-loud moment" or "a good laugh-a-day keeps the doctor away."
* Style guides: Some style guides might have specific rules regarding the hyphenation of "laugh" in certain situations.
In general, though, "laugh" should be written as a single word.