on·o·mat·o·poe·ia

1. the formation of a word, as cuckoo or boom, by imitation of a sound made by or associated with its referent.
2. a word so formed.
3. Rhetoric. the use of imitative and naturally suggestive words for rhetorical effect.

Need to know how to spell out that sound you’re looking for?  How about the amount of o’s in “ka-boom”?  Well, we’ve got a website for you.  Written Sound is a website dedicated to spell out sound:

Onomatopoeia is often funny. One goal for this website was to provide information, while keeping it light. Most entries are based on at least two independent sources (dictionaries, books, popular websites). The descriptions are deliberately short, and limited to meanings having to do with sound. For more information about a word, the first place to look is of course the dictionary. Also, check out some of the links. For even more detail, there is the whole academic discipline of linguistics, which goes a lot deeper into the matter.

The website has all of it’s contents in alphabetical order or with categories such as “explosions” or “metal”.  So, next time you get writers block on how to write that perfect sound, remember Written Word.