noun
mediocre talent; ordinary ability
A somewhat literary or formal term for a person of average or unremarkable talent. Often used self-deprecatingly or in contrast to 天才 (genius).
彼は自分を庸才だと言って、いつも努力を惜しまない。
He calls himself a person of mediocre talent and never spares any effort.
天才と庸才の差は、努力の積み重ねにある。
The difference between a genius and a person of ordinary ability lies in accumulated effort.