"D'oh" is commonly used to express frustration or disappointment, and has become a signature catchphrase of the animated character Homer Simpson. However, there are many synonyms that can be used in place of "d'oh". Some of these include: 1. Oops 2. Ahh 3. Blast 4. Fiddlesticks 5. Drat 6. Dag nabbit 7. Shoot 8. Rats 9. Oh no 10. Curses Each of these synonyms conveys a similar sentiment to "d'oh", and can be used to express annoyance or frustration in a more diverse and varied way.