IPA: /ʌnˈfɒl.oʊd/
KK: /ʌnˈfɑloʊd/
Not being followed by someone, especially on social media.
After the argument, she unfollowed him on Instagram.
Unfollowed → It is formed from "un-" (meaning not) and "followed" (from Old English "fōlgan", meaning to go after or to pursue). The word "unfollowed" means not having been followed or pursued.
Think of 'not' ('un-') pursuing or going after someone ('fōlgan') — that's why unfollowed means not followed.