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obedient; meek; docile; unaffected
honest; frank; upfront (about one's feelings)
straight (e.g. hair)
without peculiarity; without mannerisms; standard; neat (e.g. handwriting)
彼女は素直で、いつも先生の話を聞きます。
She is obedient and always listens to the teacher.
素直に謝ったので、許してもらいました。
I apologized honestly, so I got them to forgive me.
この子は素直な性格で、育てやすいです。
This child has a docile personality and is easy to raise.