Origin: Latin suffix -al
Subliminal has 2 different meanings across 1 category:
below the threshold of conscious perception
"The advertisement relied on subliminal imagery to subtly influence shoppers without them even realizing it was happening."
Below the threshold of conscious perception, especially if still able to produce a response.
"The advertisement relied on subliminal flashes of images that viewers didn't consciously see but which subtly influenced their purchasing decisions."