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• sus
  sus

  adjective

  suspicious: She says they’re just friends, but she’s been acting pretty sus around my boyfriend.
• sus-
  sus-

  variant of sub- before c, p, t: susceptible.

sus

¹ American  

[suhs] / sʌs /

adjective

Slang.

1. suspicious: She says they’re just friends, but she’s been acting pretty sus around my boyfriend.

   He called in sick on the day we all had to stay late for inventory, which seemed a little bit sus to me.

   She says they’re just friends, but she’s been acting pretty sus around my boyfriend.

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sus- ² American  

1. variant of sub- before c, p, t: susceptible.

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sus British  

/ sʌs /

noun

1. suspicion

2. a suspect

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adjective

1. suspicious

verb

1. a variant spelling of suss

Etymology

Origin of sus

First recorded in 1935–40; shortening of suspicious ( def. ); see also suss ( def. )

Example Sentences

The following year it was sneaky Canadian Shania Twain and a sus character from England referred to only as Sting.

From Los Angeles Times • Feb. 6, 2026

“Ay sus, my first moments in America will be filled with a pulsing headache,” Lola said.

From "Hello, Universe" by Erin Entrada Kelly

Silena Beauregard, one of the nicer girls from Aphrodite's cabin, gave me my first riding lesson on a pega- sus.

From "The Sea of Monsters" by Rick Riordan

Because brainy little Grace had said that tomorrow “mi tio hara que sus antepasados se sientan muy, muy orgullosos.”

From "The Smartest Kid in the Universe" by Chris Grabenstein

Second of all, she turned around and said, “What you doing, Virgilio? Ay sus, you are right under my feet!”

From "Hello, Universe" by Erin Entrada Kelly