English

subbarrier

From sub- + barrier.

Proto-Indo-European *upó ‘up; from below’

Proto-Italic *supo ‘under’

Latin sub ‘under, beneath, below’

English sub-

Anglo-Norman barrere

Middle English barrer

Today it means

adj Having a magnitude less than that of a barrier

Language periods are conventional ranges, not dates for this word.

Etymograph / subbarrier