untrustworthy
Likely to deceive
Untrustworthy describes someone or something that cannot be relied upon—likely to deceive, fail, or betray confidence.
An untrustworthy person breaks promises or acts dishonestly: He proved untrustworthy with money.
The word applies equally to unreliable things: an untrustworthy bridge, untrustworthy data.
The opposite of trustworthy.
Inclined to deceive
- deceitfulInclined to mislead others
- misleadingCausing false beliefs
- fraudulentInvolving intentional dishonesty
- manipulativeSkilled at controlling others
duplicitous · disingenuous · insincere · scheming · underhanded · shifty · sly · crafty
Disloyal and dangerous
- perfidiousDeliberately breaking faith
- faithlessUntrustworthy, lacking loyalty
- backstabbingCovert betrayal of trust
- traitorousGuilty of betrayal
double-crossing · betraying · fickle · inconstant · false-hearted · unfaithful · unreliable · disloyal
Not consistently trustworthy
- inconsistentLacking steady uniformity
- flakyCrumbly or unreliable
- irresponsibleLacking sense of duty
- unpredictableCannot be anticipated
erratic · careless · negligent · uncommitted · capricious · shaky · spotty · hit-or-miss
dishonest
Inclined to deceive
- deceitfulInclined to mislead others
- misleadingCausing false beliefs
- fraudulentInvolving intentional dishonesty
manipulative · duplicitous · disingenuous · insincere · scheming · underhanded · shifty · sly · crafty · guileful
treacherous
Disloyal and dangerous
- perfidiousDeliberately breaking faith
- faithlessUntrustworthy, lacking loyalty
- backstabbingCovert betrayal of trust
traitorous · double-crossing · betraying · fickle · inconstant · false-hearted · unfaithful · unreliable · disloyal · two-timing
undependable
Not consistently trustworthy
- inconsistentLacking steady uniformity
- flakyCrumbly or unreliable
- irresponsibleLacking sense of duty
unpredictable · erratic · careless · negligent · uncommitted · capricious · shaky · spotty · hit-or-miss · unaccountable
- betrayerstraitor, betrayer, backstabber, turncoat, double-crosser
- moral judgmentsgood, evil, wicked, virtuous, moral
- reputationreputation, reputable, bad reputation, repute, disreputable
- cunningcunning, craftiness, crafty, guile, slyness
- Questionabledubious, shady, fishy, sketchy, iffy
untrustworthydependable
Worthy of trust
reliable · trustworthy · steady · consistent · responsible