Generally co-author should be hyphenated, but the relaxed rules of modern times often present coauthor as one word
It is one word - update.
Eye-catching is hyphenated.
no.
According to the sources I've found on a quick search, you should hyphenate 'coauthor', i.e., it would better be: "co-author".
The correct spelling is non-profit. (This was the original entry) Revised 1/10 According to the Merriam Webster dictionary it is nonprofit http://www.merriam-webster.com/dictionary/Nonprofit Refer to APA styleguides and other for any alternate spellings
It is one word - update.
Nonmetal is typically written as one word.
No, thirty one is two words or a hypenated word, thirty-one.
The word "underemployed" is typically written with no spaces or hyphens as one word.
Eye-catching is hyphenated.
Dave and Larry wrote a book together, Dave is the main author and Larry is the coauthor.
It means that they are sharing credit. There is more than one author.
Yes, the term "postbaccalaureate" is typically written as one word without a hyphen.
It means that more than one author wrote a book/article together.
Yes, "pre-school" is a hyphenated word.
The term 'hypenated' is not biblical.
The word coauthor is a noun. The plural noun is coauthors.