Gariepy is a French surname that is pronounced with a silent "e." Its phonetic transcription is /ɡæripi/. The "g" is pronounced like the "g" in "go," the "a" is pronounced like the "a" in "cat," the "r" is pronounced with a rolled or flipped tongue, the "i" is pronounced like the "ee" in "sheep," and the "p" is pronounced like the "p" in "pop." The silent "e" at the end of the word doesn't change the pronunciation, but it is important for spelling.
There doesn't appear to be a widely known etymology for the word "Gariepy". It might be a personal or family name, and without additional context or information, it is difficult to determine its origins. If you have any additional details about its usage or context, it might be possible to provide a more specific answer.