Answer: franker

AnswerCrossword Clue
FRANKERHaving superior candor
FRANKERMore direct.
FRANKERMore open
FRANKERMore candid
frankerOpen, honest, and direct in speech or writing, esp. when dealing with unpalatable matters
frankerOpen, sincere, or undisguised in manner or appearance
frankerone that franks (to mark mail for postage)
frankerUnmistakable; obvious