also: まっしょうじき
na-adjective, noun
completely honest; downright honest; straightforward
Emphasizes absolute honesty or straightforwardness, often with a nuance of being almost too honest or naive.
See also: 真っ正直
彼は真正直な人だから、嘘はつかない。
He's a completely honest person, so he never lies.
真
To be perfectly honest, I don't think that plan will work.
正直 means 'honest' or 'frank'; 真正直 adds emphasis, meaning 'completely' or 'downright' honest, often implying a lack of guile or excessive candor.
Compound of 真 (ma, 'true') + 正直 (shōjiki, 'honest'). The geminated form 真っ正直 (masshōjiki) is an emphatic variant.