SAT guileless Definition Honest and sincere, without deceit or cunning. Example "His guileless smile made everyone trust him immediately." Sign in to save SAT Quiz → ← guile guillotine → Study tips featuring "guileless" Spot the Vocabulary Trap in Every Question How Context Clues Save You on the SAT Related words SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal SAT abominable