plainspoken

blunt candid forthright guileless honest matter-of-fact naive outspoken straightforward

aboveboard apparent artless bare-faced bold brazen call a spade a spade direct downright easy familiar flat-out free from the hip heart-to-heart ingenuous lay it on the line like it is man-to-man natural open outright plain plain-spoken real saying what one thinks scrupulous sincere straight straight-out transparent truthful unconcealed undisguised uninhibited unreserved unrestricted up front upright

artful deceitful devious dishonest lying tactful tricky untruthful