odd one—
1. a person or thing differing from all others of a group in some respect:
- Well, I guess I am the odd one here, because I truly enjoy the website for its content, the photography etc.
2. said of smth. not numerous or infrequently occurring:
- The season for them [ocean sunfish Mola mola] is quite short … but if you’re lucky you may see the odd one out of season.
odd one out— = odd one 1:
- The original novel by Ian Fleming was an odd-one-out in the book series, describing as it did how an off-duty Bond saved a female hotelier.