Webster's Revised Unabridged Dictionary · 1913

Mediocrity

Mediocrity , noun

[French médiocrité, Latin mediocritas.]

1.
The quality of being mediocre; a middle state or degree; a moderate degree or rate.
A mediocrity of success. — Bacon
2.
Moderation; temperance. [Obsolete] — Hooker
3.
A mediocre person; -- used disparagingly.