名词

1. 平庸;平凡;普通
If you refer to the mediocrity of something, you mean that it is of average quality but you think it should be better.

2. 庸人;平庸之辈
If you refer to someone as a mediocrity, you think that they are not very good at what they do.

1. ordinariness as a consequence of being average and not outstanding

Synonym: averageness

2. a person of second-rate ability or value

e.g. a team of aging second-raters
shone among the mediocrities who surrounded him

Synonym: second-rater