Let's say there's an article or a book titled solutions for ad hoc problems in foobar. How is ad hoc title-cased? As a preposition ad with a pronoun hoc or as an adjective? I mean, which of these four is correct?
- Solutions for Ad Hoc Problems in Foobar
- Solutions for Ad hoc Problems in Foobar
- Solutions for ad Hoc Problems in Foobar
- Solutions for ad hoc Problems in Foobar
I see that English dictionaries tend to list is as adjective/adverb which suggests Ad Hoc. But also, if treated as an adjective, it shall have a hyphen, which is clearly wrong.
(Note that I just copy-edit other people's work so I can't remove the phrase from the title, which could be an option...)