Should you hyphenate “trademark”?
Hyphenation is complicated and people do not always agree about it. If you follow these guidelines, you won't go far wrong.
Quite a few people have asked me about this. Should I hyphenate trademark? What about worldwide? Are there fixed rules about where to put hyphens and how do I know?
The general answers are these:
1. The rules are not fixed so you should use a dictionary or follow the spellchecker (or spell-checker?).
2. For any word that you use regularly in your work, decide what you are going to do and stick to it. Otherwise you will waste a lot of time checking and changing.
A word I often have to write is "proofread". My favourite dictionary (Collins Concise Dictionary) puts "proofread" first, meaning that it is the preferred option, but allows "proof-read" as an alternative. The same dictionary says "trademark" very firmly with no alternatives and "worldwide" but also "trade name".
Just to emphasise how difficult this subject is, the Economist Style Guide on-line devotes a large section to a list of individual words where hyphenation is not obvious. According to my book version of the Economist Style Guide, there should be hyphens in drawing-board, pre-war and think-tank but not in soyabean, underpaid or overrule.
Then there are words like re-mark and re-sign where the un-hyphenated word has a separate meaning altogether. Think about asking someone to re-sign a contract or resign it. The distinction could be significant I think.
Conclusion: it's complicated. Don't ask for logic or rules, just look it up somewhere reputable and then stick to the answer you get.