Skip to main content

Dictionary Store Blog World Help Advertise Chat System Status

Do Not Sell My Personal Information Information Collection Notice reCAPTCHA Privacy Terms of Service reCAPTCHA Terms Privacy Policy Accessibility Report a Bug Data Request DMCA

© 1999–2026 Urban Dictionary ®

Browse A–ZAdd a Definition User Settings

Definitions by Espresso Coffee

Nefasious

Share definition Flag

Something not good- Bad, or Annoying

Her clothes are so nefasious
Gossiping is nefasious

Nefasious by Espresso Coffee March 2, 2025

Get merch