Dictionary.com
Thesaurus.com
Synonyms

slippery

American  
[slip-uh-ree, slip-ree] / ˈslɪp ə ri, ˈslɪp ri /

adjective

slipperier, slipperiest
  1. tending or liable to cause slipping or sliding, as ice, oil, a wet surface, etc..

    a slippery road.

  2. tending to slip from the hold or grasp or from position.

    a slippery rope.

  3. likely to slip away or escape.

    slippery prospects.

  4. not to be depended on; fickle; shifty, tricky, or deceitful.

  5. unstable or insecure, as conditions.

    a slippery situation.


slippery British  
/ -prɪ, ˈslɪpərɪ /

adjective

  1. causing or tending to cause objects to slip

    a slippery road

  2. liable to slip from the grasp, a position, etc

  3. not to be relied upon; cunning and untrustworthy

    a slippery character

  4. (esp of a situation) liable to change; unstable

  5. a course of action that will lead to disaster or failure

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • nonslippery adjective
  • slipperily adverb
  • slipperiness noun
  • unslippery adjective

Etymology

Origin of slippery

1525–35; alteration of slipper 2; compare Low German slipperig; see -y 1

Explanation

Slippery things are slimy or wet, or for some other reason cause you to slide on them. A slippery fish is hard to hold in your hand, and a slippery path is easy to slip on. You should drive slowly and cautiously when the road is slippery after it starts to sleet. And your hands may get slippery with sweat when you're nervous about a job interview. You can also use this adjective in a figurative way, to mean "tricky" or "unreliable," so you might complain about your slippery brother, who always manages to disappear right before it's time to take the trash out or load the dishwasher.

Keep Reading on Vocabulary.com

Vocabulary lists containing slippery

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This last part especially reminded me of such slippery works as Abbas Kiarostami’s 2010 masterpiece, “Certified Copy.”

From The Wall Street Journal • Apr. 16, 2026

The National Weather Service was advising people to allow extra time for travel because of the slippery roads.

From Los Angeles Times • Apr. 11, 2026

Admittedly, answering emails on the weekend can be a slippery slope.

From MarketWatch • Mar. 18, 2026

Another practical argument against the bill has been concerns about a "slippery slope", with campaigners pointing to Belgium and Canada where assisted deaths have risen as eligibility criteria have expanded.

From BBC • Mar. 16, 2026

Poets find this useful, but poets are a slippery lot to begin with.

From "The Long-Lost Home" by Maryrose Wood