Here is the latest in a series of tips on usage and style shared by Mignon Fogarty, better known as the one and only Grammar Girl. One of Mignon's correspondents inquires about when setup should appear as a single, unbroken word, and when there should be a space or a hyphen between set and up.
Karen W. from Ottawa, Canada, sees set up, set-up, and setup used interchangeably and wonders if that's OK.
Setup as one word or with a hyphen (set-up) is a noun for naming things such as a place setting at a table or a trap for criminals.*
Set up as two words is a verb phrase for describing actions such as putting things in order, arranging a date, creating a trap for someone.
* As with many compound words, different dictionaries give different advice. Some show the noun as a closed compound and others show it as a hyphenated compound. The verb form is always two words.
Mignon Fogarty is better known as Grammar Girl. She is the founder of the Quick and Dirty Tips network, author of Grammar Girl's Quick and Dirty Tips for Better Writing, and the creator of the iOS game Grammar Pop.Click here to read other articles by Mignon Fogarty