subliminal

adjective

sub·​lim·​i·​nal (ˌ)sə-ˈbli-mə-nᵊl 

1

: inadequate to produce a sensation or a perception

2

: existing or functioning below the threshold of consciousness

the subliminal mind

subliminal advertising

subliminally adverb

Did you know?

Since the Latin word limen means "threshold", something subliminal exists just below the threshold of conscious awareness. The classic example of a subliminal message is "Eat popcorn" flashed on a movie screen so quickly that the audience doesn't even notice it consciously. Actually, no such advertising has ever been shown to work. But ordinary ads, both in print and on TV, do contain all kinds of images that shape our response to the product being advertised even when we don't realize it. Try looking carefully at some ads that you like, in order to discover how many ways they may be subliminally affecting you.

Examples of subliminal in a Sentence

The studio denied the existence of subliminal messages in the movie.

I am skeptical that subliminal advertising actually works.

Recent Examples on the Web

Drop after drop after drop from the receivers and tight ends — all while Brandon Aiyuk continued to post subliminal messages on social media amid his feud with the 49ers. —Nicki Jhabvala, New York Times, 17 June 2026

When Kelli arrives to move into Shamea’s townhouse, the exchange is fraught with what feels like subliminal messages directed at Porsha. —Ile-Ife Okantah, Vulture, 15 June 2026

His legacy as one of rap’s great subliminal assassins is one of the most impressive parts of his career. —Jayson Buford, Rolling Stone, 3 June 2026

Sometimes, the frame is transfixed by haunting, practically subliminal changes fomenting on a subconscious level, as Dua is shaken from within, and the remarkable Matoshi doles out nuggets of recognizable emotion from beneath her rock-hard exterior. —Siddhant Adlakha, Variety, 13 May 2026

Word History

Etymology

sub- + Latin limin-, limen threshold

First Known Use

1883, in the meaning defined at sense 1

Rhymes for subliminal

• noncriminal
• criminal
• liminal

Kids Definition

subliminal

adjective

sub·​lim·​i·​nal (ˌ)səb-ˈlim-ən-ᵊl 

ˈsəb-

1

: not strong enough to produce a sensation or a mental awareness

subliminal stimuli

2

: existing or functioning below the level of conscious awareness

the subliminal mind

subliminal advertising

subliminally

-ē

adverb

Medical Definition

subliminal

adjective

sub·​lim·​i·​nal (ˌ)səb-ˈlim-ən-ᵊl, ˈsəb- 

1

: inadequate to produce a sensation or a perception

2

: existing or functioning below the threshold of consciousness

the subliminal mind

subliminal advertising

subliminally

-ē 

adverb