Underthreshold meaning

Positioned below a threshold.
adjective
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Being below the threshold or outside of the ordinary limits of consciousness; subconscious; subliminal.
adjective
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Origin of underthreshold

  • From under- +‎ threshold, probably a calque of German unterschwellig (“subliminal”, literally “under-threshold”), from unter- (“under-”) + Schwelle (“threshold”). More at under, sill.

    From Wiktionary