What does SO mean?

A slang acronym for "Significant Other", a relationship partner.


Other definitions of SO:

  • Abbreviation for "significant other". This is a gender-neutral way to refer a partner in a relationship, like a boyfriend or girlfriend.
  • A transition word that can imply many things, including: 1) "Anyway...", 2) "Okay... who cares?", 3) "In a manner thus", among other things.

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How to use the term

  • Let me run it by my SO. We're going on a date that night, so it might not work.

  • Me and my S.O. have been together for a few years.

  • So... do you have anything else you can show us?


There are no references for SO at this time. We would greatly appreciate your contribution if you would like to submit your own!

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Most usages of "OTN" on the Internet these days are of Japanese origin and refer by sound-alike to the Japanese slang terms "ochin" (child's testicles) and (especially) "ochinchin" (child's penis). The term is especialy used in the phrase "gigantic OTN" meaning that a boy has a very large penis for a person of his age. As of mid-2015, the term OTN is popular primarily because of the song "Gigantic OTN" (look it up on YouTube).