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honest; upright; decent; proper; respectable; straight; serious; sensible
「真正面」 has another reading with different meanings.
真正面から質問されると答えに困る。
When asked directly, I have trouble answering.
彼は真正面な態度で仕事に取り組んでいる。
He approaches his work with a straightforward attitude.
真正面に受け止めすぎると疲れてしまう。
If you take everything too seriously, you'll wear yourself out.