taru-adjective, adverb taking the 'to' particle
Literary, somewhat old-fashioned word used to describe something as unremarkable or run-of-the-mill. Often appears in the adverbial form ぼんぼんと or as a たる adjective in written language.
His work was of ordinary quality.
Spend one's days in an ordinary, uneventful way.
very ordinary; mediocre; all-too-common; quite commonplace
Rare kanji spelling using the iteration mark 々; the form 凡凡 is also seen.
Alternate kanji spelling without the iteration mark; equally rare.
Reduplication of 凡 (ぼん, 'ordinary, common'), emphasizing the quality of being unremarkable. The exact historical derivation is uncertain, but the form follows a pattern of emphatic reduplication seen in literary Japanese.