2FA

A form of two-factor authentication — An identity and access management security method in which users provide two different authentication factors to verify themselves: first the user's password and then a (randomly generated and frequently changing) code generated by an app.

Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

noun2FA (uncountable)
  1. abbreviationinitialismuncountablecomputer securityInitialism of two-factor authentication.

    As of 2021, only 2.6% of Twitter users had a 2FA method enabled – and of those, 74.4% used SMS authentication, a Twitter account security report said.

    2023 February 18, Ramishah Maruf, “Twitter to charge for SMS two-factor authentication”, in CNN Business

Synonyms & antonyms

Also see
two-factor authentication
Cite this entry
APA

2FA. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/2FA

MLA

“2FA.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/2FA. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “2FA,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/2FA.

Source: 2FA on Wiktionary, CC BY-SA 4.0.