1. (characterized by directness in manner or speech
without subtlety or evasion
"blunt talking and straight shooting"
"a blunt New England farmer"
"I gave them my candid opinion"
"forthright criticism"
"a forthright approach to the problem"
"tell me what you think--and you may just as well be frank"
"it is possible to be outspoken without being rude"
"plainspoken and to the point"
"a point-blank accusation")
blunt, candid, forthright, frank, free-spoken, outspoken, plainspoken, point-blank, straight-from-the-shoulder


2. (characterized by an inability to mask your feelings
not devious
"an ingenuous admission of responsibility")
ingenuous, artless: :

3. (without dissimulation
frank
"my honest opinion")
honest: :

(prawdomówny) frank, sincere
(prawdziwy) genuine
(czysty, bez domieszek) pure
być ~ym to be honest/frank
aby być całkiem ~ym to be quite honest
w ~ych zamiarach bona fides

SINCERE

HONEST

CANDID

TRANSPARENT

OUTSPOKEN

FORTHRIGHT

STRAIGHTFORWARD

OPENHEARTED

GUILELESS

WHOLE-HEARTED

TRUE

DOWNRIGHT

FEELING

HEART-FELT

UNRESERVED

SINGLE

STRAIGHT

PLUMB

GENUINE

BONA FIDE

PURE

OPEN

GAME

FRANK

adj sincere, plain; (np. o złocie) genuine

adj. sincere
frank
heart-felt
open-hearted

artless

bluff

clean

devout

direct

franked

heartfelt

heartiest

heart-to-heart

hearty

ingenuous

man-to-man

natural

open-hearted

outright

plain

round

unaffected

unsophisticated

ungrudging

upfront

plainspoken

plain-spoken

truthful

above-board