1. What does FO stand for?

Far out

A phrase that was pretty common in 1970s, which was several years before online chat was available.


"Those new sneakers are fo!"

Related Slang


Last Updated: August 7, 2013

2. What does FO stand for?

Freaking out

The acronym FO can stand for "freaking out." If someone tells you that you're FO, they think you're stressing overmuch about something.

The phrase "freaking out" comes from 1960s counterculture, in which hippies and other LSD users used the term to mean having a negative reaction to their psychotropic drug of choice. From there, the term came to be applied to all sorts of other irrational, paranoid, or stress-related behavior.


"He was FO over what was just a small misunderstanding."

Don't FO; everything's cool

Related Slang


Last Updated: October 27, 2020

FO definition

This page explains what the acronym "FO" means. The various definitions, examples, and related terms listed above have been written and compiled by the Slangit team.

We are constantly updating our database with new slang terms, acronyms, and abbreviations. If you would like to suggest a term or an update to an existing one, please let us know!