prefixes - Is there a prefix that indicates that an event recurs four times a year?

More importantly, is there a resource or table somewhere that I can use in the future to construct prefixes for other intervals shorter than a year?

Not really, because commonly used ones are often exceptions to rules. However, you now have a good set:

• Annually (and the multiplicators)


• Bianually


• Quarterly


• Monthly (there should be a word for every two months)


• Fortnightly


• Weekly

...

Now you only have problems if you need to define every 6 weeks or suchlike.

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