Definitions

out like a light

ADJECTIVE

asleep

Synonyms

STRONGEST

comatose dormant

WEAK

catching some zzz's conked crashed dozing dreaming flaked out getting shut-eye hibernating in dreamland in repose inactive inert napping on the kip out out cold out of it reposing resting sacked out sleeping slumbering snoozing snoring somnolent taking forty winks

Antonyms

WEAK

attentive awake conscious

ADJECTIVE

passed out

Synonyms

WEAK

anesthetized asleep blacked out comatose dead to the world knocked out out cold

ADJECTIVE

unawake

Synonyms

WEAK

asleep conked crashed dead to the world dozing dreaming fast inactive inert napping snoozing sound unconscious

ADJECTIVE

unconscious

Synonyms

STRONGEST

comatose paralyzed senseless

STRONG

cold out raving

WEAK

benumbed blacked out bombed dead to the world drowsy entranced feeling no pain flattened in a trance inanimate inert insensate insensible knocked lethargic numb on the canvas palsied passed out put away stunned stupefied swooning torpid tranced zonked

Antonyms

WEAK

awake aware conscious decided intended intentional knowing

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.

That wasn’t a problem for Smith, who said that after he broke down some film, he put on his headphones and earbuds, turned on music and was out like a light.

From Seattle Times • Nov. 10, 2022

We were designed to burn out, like a light bulb that was overamped.

From New York Times • Aug. 9, 2018

Mr Clarke said he blacked out "like a light switch".

From BBC • Aug. 28, 2015

I was out like a light the instant I closed my eyes.

From The New Yorker • Jun. 17, 2014

“Mom is out like a light, and we have to let her rest, okay? Don’t make a lot of noise going up the stairs. I’m in the guest room if you need anything.”

From "Auggie & Me" by R. J. Palacio

out like a light

Example Sentences

Related Words