Idiom: Sail Under False ColorsCheck definitions of...sailunderfalsecolorsMeaningsTo deceive or intentionally mystify.A-Z Proximitiessacked outsacred cowsaddle trampsail close to the windsail the Red Sea sail under false colors saladsalad yearsalt awaysalt in the woundsalt of the earthSimilar Idiomssail under false colorsunder sailwith flying colorscrowd sailsail close to the windsail the Red Seafalse alarmfalse lightfalse notering falsestrike a false notedown underfly under the radarget under someone's skingo underhide one's light under a bushelhot under the collarknuckle underlet the grass grow under one's feetlight a fire underSimilar Phrasesflying colorsballoon sailgaff-headed saillateen sailpress of sailsail throughsquare sailtopgallant sailpheasant under glassbob underbuckle undercontract under sealfall undergo underunder armsgoing underknuckle underlying under oathput underunder attack