friction

noun

fric·​tion ˈfrik-shən 

1

a

: the rubbing of one body against another

the friction of sandpaper on wood

b

: the force that resists relative motion between two bodies in contact

oil in a car engine reduces friction

2

: the clashing between two persons or parties of opposed views : disagreement

friction between neighbors

friction between state and federal authorities

3

: sound produced by the movement of air through a narrow constriction in the mouth or glottis

frictionless

ˈfrik-shən-ləs 

adjective

frictionlessly adverb

Synonyms of friction

• discord
• strife
• conflict
• discordance
• war
• schism
• discordancy
• warfare
• dissent

Examples of friction in a Sentence

the friction of sandpaper on wood

Oil in a car engine reduces friction.

It was difficult to reach an agreement because of the friction between the two sides.

Recent Examples on the Web

This removes much of the friction that’s often involved with editing 360 files – assuming the algorithmic choices match your creative intent. — New Atlas, 13 Aug. 2026

The new season had its own internal conflicts, with lead Hardy initially walking away, reportedly over friction with producers and showrunner and writer Jez Butterworth. — Jesse Whittock, Deadline, 13 Aug. 2026

The 61-year-old man who was nearly sucked out of the plane suffered neck and shoulder injuries and friction burns. — Josh Funk, Chicago Tribune, 13 Aug. 2026

The challenge, Shaw said, is introducing enough friction to make people scrutinize AI’s answers without making the technology so cumbersome that users simply choose a faster competitor. — Tatiana Sataua, Fortune, 12 Aug. 2026

Word History

Etymology

earlier, therapeutic rubbing of the limbs, from Middle French, from Latin friction-, frictio, from fricare to rub; akin to Latin friare to crumble, and perhaps to Sanskrit bhrīṇanti they injure

First Known Use

1704, in the meaning defined at sense 1a

Phrases Containing friction

• friction clutch
• friction drive
• friction tape

Rhymes for friction

• diction
• fiction
• addiction
• affliction
• constriction
• conviction
• depiction
• eviction
• infliction
• nonfiction
• prediction
• restriction

Kids Definition

friction

noun

fric·​tion ˈfrik-shən 

1

a

: the rubbing of one thing against another

b

: the force that resists motion between bodies in contact

the friction of a box sliding along the floor

lubrication reduces friction

2

: disagreement between persons or groups

3

: sound produced by the movement of air through a narrow constriction in the mouth or glottis

frictional

-shnəl, 

-shən-ᵊl

adjective

frictionally

-ē

adverb

frictionless

-ləs 

adjective

Etymology

Middle English friction "a rubbing of two things together, friction," from early French friction or Latin friction-, frictio (both same meaning), derived from Latin fricare "to rub" — related to fray entry 2