Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
Sonssib = Son's sib(ling). Your son's half brother or half sister, therefore not your birthchild. Also, not your adopted child or stepchild. Likely a child your ex had after you were apart. Usually only used in writing, and in plural form.
Text fits
Save
Cancel