Someone you are casually dating, while seeing others on the side. This person is almost always someone you would never consider dating exclusively, but, you keep around as a backup plan for free Saturday nights.
Maria: Oo, the new guy in Calculus is cute!
Virginia: Wait, I thought you and James were dating?
Maria: No, no, we're just insignificant others.
Virginia: Wait, I thought you and James were dating?
Maria: No, no, we're just insignificant others.
by Madelaine August 31, 2008

Sophie: Are you and Brian officially a couple?
Nadia: No, we just hook up occasionally. He's my insignificant other.
Nadia: No, we just hook up occasionally. He's my insignificant other.
by Flanhoodles April 16, 2008

no example for mr. insignificant
by djhflskhflasjhlfkahsldkj August 1, 2007

If your SO is annoying, ungrateful, and overall an useless person, you call them your Insignificant Other.
"My boyfriend does not do any chores. He is my Insignificant Other."
"Shut up Carla, I only said I won't wash your undergarments"
"Shut up Carla, I only said I won't wash your undergarments"
by PseudoWarrior07 January 12, 2022

Someone you are casually dating, while seeing others on the side. This person is almost always someone you would never consider dating exclusively, but, you keep around as a backup plan for free Saturday nights.
Maria: Oo, the new guy in Calculus is cute!
Virginia: Wait, I thought you and James were dating?
Maria: No, no, we're just insignificant others.
Virginia: Wait, I thought you and James were dating?
Maria: No, no, we're just insignificant others.
by Madelaine July 11, 2006

gee man, I cant seem to find the answer to this math problem!
<Its 1+1>
YOU PUNY INSIGNIFICANT MORTAL!!!! THE ANSWER IS CLEARLY 3!!!!
<Its 1+1>
YOU PUNY INSIGNIFICANT MORTAL!!!! THE ANSWER IS CLEARLY 3!!!!
by Nukes.io February 15, 2020

mitchell had a low opinion of his insignificant other, he assumed the worst about her intentions, even though he was wrong to do so.
by scapegirl February 17, 2025
