Mediocre, Commonplace, Banal
noun, な adjective, の adjective
Mediocre and commonplace things are still mediocre and commonplace.
ぼんよう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼は凡庸な男ですが、愛に満ちあふれていました。
He was a mediocre man but was filled to the brim with love.