I’ve often been told that I pronounce the word “geocache” incorrectly.  Everyone else I have come into contact with pronounces it ‘geo-cash’.  The same pronunciation is used for the word cache on its own; everyone else seems to pronounce it ‘cash’.
Personally, I pronounce the word “cache” as ‘cay-shh‘.  And that’s because I’m right and all of you are plain WRONG.  Here’s why:

In english, words that end with an e and and have a letter ‘a’ in them are pronounced with the ‘a’ pronounced like a capital ‘A’.  Here is a link to more info.  Here are some examples:

Late
Blame
Same
Tape
Cape
Cave
Cable
Case
Came
Cane

There are a few exceptions, but only for words that did not originate in English.  A good example of this is:

Cafe.

Here we pronounce it ‘ca-ff-ey‘.  That’s because the correct French pronunciation is ‘ca-ff-ey‘.  So cafe is an exception only because it’s not an English word.

So what about ‘cache‘ then, is that not a French word too? Yes it is.  But the correct French pronunciation is ‘ca-sh-ee‘, not ‘cash’.

Conclusion

• If you’re going to use the correct French pronunciation of the word, please change your current pronunciation ‘cash’ to ‘ca-sh-ee’ or stop telling me I pronounce it wrong.
• If you’re not going to use the correct French pronunciation, and instead treat it as an English word, then please change your current pronunciation ‘cash’ to the correct English pronunciation ‘cay-shh’ or stop telling me I pronounce it wrong.
• If you continue to use ‘cash’ as your pronunciation then you’re just plain wrong whether you consider French or English pronunciation.  You’re in no man’s land!