Meaning In search of
Type Acronym
Rank ★ ★ ☆  Average
Usage Online Only (chat, messaging, e-mail)
Comments An acronym sometimes used in classified ads and want ads.
Example "ISO a female tennis partner between the ages of 20 and 25."
Updated August 9, 2017
Meaning Is seeking other
Type Acronym
Rank ★ ★ ☆  Average
Usage General (not just online)
Comments An acronym used in personals (online and offline), i.e. "woman seeking man" or "man seeking woman."
Updated May 6, 2015