| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | unfaithful |
| Synonyms: | alienated, apostate, cheating, disaffected, double-crossing, estranged, faithless, false, perfidious, recreant, seditious, snaky, subversive, traitorous, treacherous, treasonable, two-faced, two-timing, unloyal, unpatriotic, untrue, untrustworthy, wormlike |
| Antonyms: | faithful, loyal, true, trustworthy |
| Main Entry: | perfidious |
| Part of Speech: | adjective |
| Definition: | treacherous |
| Synonyms: | betraying, deceitful, deceptive, double-crossing, double-dealing, faithless, false, insidious, misleading, recreant, shifty, slick*, snake in the grass, traitorous, two-faced, two-timing, undependable, unfaithful, unloyal, unreliable, untrustworthy |
| Main Entry: | treacherous |
| Part of Speech: | adjective |
| Definition: | dishonest, disloyal |
| Synonyms: | betraying, catchy, deceitful, deceptive, double-crossing, double-dealing, duplicitous, faithless, false, false-hearted, fly-by-night, insidious, misleading, perfidious, recreant, shifty, slick*, slippery*, snake in the grass, traitorous, treasonable, tricky, two-faced, two-timing, undependable, unfaithful, unloyal, unreliable, untrue, untrustworthy |
| Antonyms: | forthright, honest, loyal, true |
| Main Entry: | untrue |
| Part of Speech: | adjective |
| Definition: | dishonest |
| Synonyms: | apocryphal, cheating, counterfactual, deceitful, deceptive, delusive, deviant, disloyal, dissembling, distorted, erroneous, faithless, fallacious, false, fictitious, forsworn, hollow, imprecise, inaccurate, inconstant, incorrect, inexact, lying, meretricious, misleading, mistaken, off*, out of line, perfidious, perjured, prevaricating, recreant, sham*, specious, spurious, traitorous, treacherous, two-faced, unfaithful, unloyal, unsound, untrustworthy, untruthful, wide, wrong |
| Antonyms: | faithful, honest, true |
| Main Entry: | truthless |
| Part of Speech: | adjective |
| Definition: | not true |
| Synonyms: | counterfactual, deceitful, deceptive, delusive, deviant, disloyal, dissembling, distorted, erroneous, faithless, fallacious, false, fictitious, forsworn, hollow, imprecise, inaccurate, inconstant, incorrect, inexact, lying, meretricious, misleading, mistaken, off*, out of line, perfidious, perjured, prevaricating, recreant, sham*, specious, spurious, traitorous, treacherous, two-faced, unfaithful, unloyal, unsound, untrue, untrustworthy, untruthful, wide, wrong |