The acronym "FF" has a variety of synonyms that are commonly used in different contexts. In social media, "FF" is often used as an abbreviation for "Follow Friday," a trend wherein users recommend people to follow on the platform. Other synonyms for "FF" in social media include "Shoutout Sunday," "Thankful Thursday," and "Throwback Tuesday," which all involve users highlighting certain people or moments on those specific days. In gaming, "FF" is also an abbreviation for "forfeit" or "Final Fantasy," a popular role-playing video game franchise. Additionally, "FF" can also refer to "Friendly Fire" in militaries, highlighting the accidental harming of one's allies in combat.