na-adjective, noun
Describes a straightforward, open, and genuine character or attitude. Somewhat formal and literary; in everyday speech 正直 (しょうじき) or 率直 (そっちょく) are more common.
彼の真率な態度に心を打たれた。
I was moved by his sincere attitude.
真率に話してくれてありがとう。
Thank you for speaking frankly.