significant other 

when you're "dating" only one person, but the official title of boyfriend/girlfriend does not exist.

karen: so you and nick are dating?
me: no. he's my significant other.
karen: what's that?
me: we only see each other but we don't have the official title. i.e. he's my significant other.

significant other by miss monique June 12, 2008

Significant other 

A person, and or; persons your in a sexual relationship with no strings attached!!

I have a significant other

Significant other by Datmeat April 1, 2020

Significant Other 

Limp Bizkit’s 2nd studio album

“Dude have you listened to Significant Other yet? It has some sick Wes Boreland riffs.”

Significant Other by Dick Insider October 12, 2020

Significant Other 

A significant other is what you someone you are in a relationship with without disclosing gender identity, relationship/marital status, or sexual orientation.

Commonly used to describe someone who is non-binary/genderqueer that you or someone else is in a relationship with, as well as with people who don't want people to know their sexual orientation (bisexual, pansexual, etc).
Though, it can have different meanings depending on how you use it. Such as describing someone you're dating/not in a relationship with yet.

Example 1:

"Jessa recently told me that she is in a relationship with someone!"
"Really? What's her boyfriend's name?"
"Actually, they are nonbinary/genderqueer so they prefer 'significant other'."

Example 2:

"I'm going on a date tonight with my significant other!"
"Awesome! Is it a boy?"
"It's none of your business."

Example 3:

"How is it going with you and Alexa?"
"At the moment, we're not making it official so she's just a significant other."

Significant Other by Mimiki D. January 30, 2021

Significant Other Sabotage (SOS) 

Those little things that your Significant Other does that cause you UNTOLD GRIEF & STRESS!!! These particular behaviors can NOT be changed. Ever. Period.

Significant Other Sabotage (SOS) is when they can't remember to lock the car doors when they park in the driveway at home. Their garage-door opener is in the car console. Your motorcycles, that you don't have theft insurance on, are in the garage.

AAAAAAAAAAAAAAAACK!!!

Significant Other Sabotage (SOS) by MotoCatfish December 12, 2008

Significant Other Dependency Syndrome (SODS)

Significant Other Dependency Syndrome or SODS effects millions of north americans. The symptoms include but are not limited to : change in sleep patterns ex. staying in and passing out by 10 on a friday night, decreased attention on ones personal fitness level (often referred to as comfort weight), the inability to sleep comfortably alone, the necessity to be in constant contact and in severe cases they even multiply.

These people often socialize with their own type. It is very uncommon to find only a couple people with SODS at a party. They used to go through a ritual so we could identify these people easily by a quick glance at their left hand but now many have abandoned this ritual which leaves them unnoticed.

"Did you go to that house party last night?"
"Yea, it was terrible! Everyone there had Significant Other Dependency Syndrome (SODS)"

Significant Other Dependency Syndrome (SODS) by CynicalCanadian October 24, 2011

statistically significant other 

A significant other whose status is not created by a agreed-upon relationship status but by how much time is spent with them. Could also be considered a behavioral significant other.

Combination of "statistically significant" and "significant other."

Since he spent twice as much time with Karen as with any of the other girls he was dating, his friends called Karen his statistically significant other.

statistically significant other by Brett Lider February 5, 2009