Meaning of 平平 in Japanese

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Definition of 平平

へいへい(heihei) 【平々 ·平平】

へいへいぼんぼん(heiheibonbon) 【平々凡々 ·平平凡凡】

(adj-na, adj-no, adj-t, adv-to) very ordinary; mediocre; all-too-common; quite commonplace
彼ほど平々凡々たる主人公は珍しい。
A protagonist as plain and ordinary as him is rare indeed.