slippery

adjective

slip·​pery ˈsli-p(ə-)rē 

slipperier; slipperiest

1

a

: causing or tending to cause something to slide or fall

slippery roads

b

: tending to slip from the grasp

a slippery fish

2

a

: not firmly fixed : unstable

b

: not precise or fixed in meaning : ambiguous, elusive

3

: not to be trusted : tricky

slipperiness noun

Synonyms of slippery

• shady

Examples of slippery in a Sentence

The trails were muddy and slippery.

Fish are slippery to hold.

The sign cautions: “Slippery when wet.”

Recent Examples on the Web

But amid the mess of UCLA’s 72-59 win over 14th-seeded Rutgers was a slippery star point guard in the middle of one of his masterworks, not only lifting the Bruins to victory but passing and rebounding and defending his way into the Big Ten tournament record books. —Ryan Kartje, Los Angeles Times, 13 Mar. 2026

The experiments also included slippery objects like jam jars and billiard balls and everyday items such as soup cans and apples. —Georgina Jedikovska, Interesting Engineering, 11 Mar. 2026

Ro Reddick’s Reagan-era caper-cum-bildungsroman, which had its premiere at last year’s Summerworks and recently took home the Susan Smith Blackburn Prize, is a heightened, slippery creature. —Sara Holdren, Vulture, 11 Mar. 2026

As the group went to leave Hughes’ Gainesville home in two separate vehicles, the beloved teacher tripped on the slippery roadway and fell into the street, the Hall County Sheriff’s Office said. —Julia Bonavita, FOXNews.com, 11 Mar. 2026

Word History

Etymology

slipper entry 1 + -y entry 1

Note: As the earliest occurrence of slippery appears to be in the Coverdale Bible (1535, Psalm 35:6), it has been suggested that the addition of the suffix -y to the adjective slipper copies German schlipfferig in Luther's translation of the same passage (1534, present-day German schlüpfrig). The German word is ultimately from the same Germanic base as slip entry 5 (see Oxford Dictionary of English Etymology).

First Known Use

circa 1500, in the meaning defined at sense 1a

Phrases Containing slippery

• slippery elm
• slippery slope

Kids Definition

slippery

adjective

slip·​pery ˈslip-(ə-)rē 

slipperier; slipperiest

1

: having a surface smooth enough to cause one to slide or lose one's hold

2

: not worthy of trust : tricky, crafty

slipperiness noun