まっとう・真っ当・全うmattou[0]heiban (flat)

1. na-adjectiveproper; respectable; decent; honest
2. adverbentirely; completely; wholly; perfectly

• Related全うするまっとうするNeutralA verb for carrying something through to the end or fulfilling a duty, as in 「天寿を全うする」; 「真っ当」 works mainly as a na-adjective describing something proper and decent.
• Antonym不当ふとうNeutralMeans unfair, unjust or unreasonable — the opposite of the decency and reasonableness of 「真っ当」.

For something proper and decent, use 「真っ当」 (or 「まとも」), as in 「真っ当な仕事」; use 「全うする」 for seeing a duty through, and 「不当」 for what is unfair or improper.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. まとも。まじめ。きちんとしたさま。
2. 完全かんぜんに成し遂なしとげる。完全かんぜんに果はたす。