senseless

adjective

sense·​less ˈsen(t)s-ləs 

: destitute of, deficient in, or contrary to sense: such as

a

: unconscious

knocked senseless

b

: foolish, stupid

… it was some senseless practical joke …

—Arthur Conan Doyle

c

: meaningless

a senseless murder

senselessly adverb

senselessness noun

Synonyms of senseless

• unconscious

Examples of senseless in a Sentence

Don't be such a senseless idiot!

she collapsed, senseless, after hitting her head

Recent Examples on the Web

After yet another school shooting, investigators are trying to piece together a senseless act. — October 16, NPR, 16 Oct. 2026

The remnants of police caution tape wrapped around utility poles are the only sign of the tragic and senseless shooting that killed Kayliah. — Veronica Ortega, CBS News, 14 Oct. 2026

And then with the crazy, senseless things that are going on in the world and the fuel prices going up. — Mark Olsen, Los Angeles Times, 25 Sep. 2026

Now people on both sides of the border will pay for a senseless trade war instigated by a petulant and vengeful president. — Sun Sentinel Editorial Board, Sun Sentinel, 24 Aug. 2026

Word History

First Known Use

circa 1547, in the meaning defined above

Rhymes for senseless

• defenseless

Kids Definition

senseless

adjective

sense·​less ˈsen(t)-sləs 

1

: unconscious entry 1 sense 2

knocked senseless

2

: foolish, stupid

3

: pointless sense 1, meaningless

a senseless act

senselessly adverb

senselessness noun