English

submediocre

From sub- + mediocre.

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

Proto-Italic *supo ‘under’

Latin sub ‘under, beneath, below’

English sub-

Latin mediocris ‘in a middle state”, “of middle size”,…’

Middle French médiocre

French médiocre ‘mediocre, middle’

Middle English medioker

Today it means

adj Worse than mediocre.

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

Etymograph / submediocre