PC.net

SO

Meaning Significant other
Type Acronym
Rank ★ ★ ☆  Average
Usage General (not just online)
Comments

Typically refers to a boyfriend/girlfriend or a spouse.

Example "My SO and I are both planning on going to the play with you guys."
Updated April 18, 2017
Information from PC.net
https://pc.net/slang/meaning/so
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