I always thought it was a todo list, and quite a few places online refer to it as todo, but various spell checkers are telling me it should be to-do.
The only meaning I could find was a reference by dictionary.com which is different from the use I need for the word.
Which is correct?
Best Answer
Wiktionary defines both to-do and todo:
And:
You can use whichever you want, but be consistent. To-do is a little clearer, but hyphens are naturally lost as languages evolve (to-day, wire-less), so todo should be fine too.
Edit: Waggers makes a very good point that todo isn't yet as widely adopted as to-do. So you may be better off sticking to to-do.
Ngram of "todo list" vs "to do list" (+ "list" because to avoid the fuss and commotion meanings, and "to do" will include "to-do"):
Comparison of term on newspaper websites, but note "to-do list" also returns hits for "to do list":