Synonyms for Honest:

adj.

aboveboard (adjective)
square.
all (adjective)
fair, good, honorable.
artless (adjective)
downright, broad, unaffected, unpretentious, overt, unadorned, open, plain, Plain-spoken, outgoing, genuine, uncalculating, candid, direct, undeceiving, blunt, natural, straightforward, callow, naive, trusting, unrestrained, unsophisticated, sincere, artless, frank, undeceptive, ingenuous, undisguised, undeceitful, Unbeguiling, Unartful, un-artificial.
plainspoken (adjective)
plainspoken, Plain-spoken, man-to-man.
real (adjective)
solid, substantial, veritable, factual, actual, genuine, concrete, true, authentic, tangible, real, sincere.
reliable (adjective)
trustworthy.
reputable (adjective)
honorable.
respectable (adjective)
fair, good, unimpeachable, angelical, moral, law-abiding, blameless, noble, irreproachable, righteous, respectable, saintly, worthy, true, estimable, untarnished, principled, creditable, right-minded, pure, upstanding, forthright, virtuous, honorable.
simple (adjective)
artless, un-artificial.
succinct (adjective)
informal, clear, intelligible, simple, candid, outspoken, blunt, prosaic, folksy, unpoetical, direct, uncluttered, Plain-spoken, unadorned, unpretentious, stark, ordinary, frank, straightforward, bald, casual.
true (adjective)
certain, factual, absolute, veracious, definite, right, authentic, true, gospel, proven, axiomatic.
truthful (adjective)
ethical, earnest, trustworthy, truthful.
truthful, candid (adjective)
fair, frank, true, authentic, law-abiding, ingenuous, direct, open, honorable, straight, reliable, straightforward, veracious, virtuous, ethical, trustworthy, plain, equitable, sincere, real, undisguised, forthright, unfeigned, genuine.
veracious (adjective)
correct, factual, veracious, undeceptive, true, genuine, authentic, accurate, ingenuous.
virtuous (adjective)
virtuous.

n.

antisocial, collaborative, ceremonial, cooperative, collegiate, assistant, clerical, adjunct, associate. fine, incorruptible, straight-shooting. plainspoken, straight-from-the-shoulder, straight-out, man-to-man, show. hearty, heartfelt, unfeigned, unmannered. fair (noun)
equitable.
frank (noun)
see.
honest (noun)
downright, guileless, open, reliable, square, true, artless, truthful, dependable, honorable, straight, veracious, unpretentious.

Other synonyms:

fine. sincere
heartfelt.

Usage examples for honest

  1. Is that a hand that ever did a day's honest work?" – A Set of Rogues by Frank Barrett
  2. The message is an honest paper, but says not much. – Diary from March 4, 1861, to November 12, 1862 by Adam Gurowski
  3. Ay, there's the Way, my honest Friend, to live. – The Conspiracy of Pontiac and the Indian War after the Conquest of Canada by Francis Parkman