What Does /O\ Mean? (Using /O\ Online)/O\ means "Frustrated".
Definition for /O\/O\ means "Frustrated". This is the most common definition for /O\ on Snapchat, WhatsApp, Facebook, and Twitter. Here is some more information about /O\:
2: Quite easy to guess
Adults and Teenagers
Using /O\ on a Cell Phone (SMS Texts, Whatsapp, and Yubl)