untrustable
Not worth believing
Not able to be trusted; unreliable or unworthy of confidence.
The word is rarer than *untrustworthy*, which covers the same ground: He proved untrustable after leaking company secrets.
Both suggest someone whose word or behavior cannot be relied upon.
Not consistently trustworthy
- unpredictableCannot be anticipated
- inconsistentLacking steady uniformity
- erraticLacking regularity or consistency
- flakyCrumbly or unreliable
shaky · spotty · faulty · defective · fallible · questionable · dubious · iffy
Inclined to distrust
- suspectBelieve to be likely
- fishyArousing doubt, colloquially
- questionableOf uncertain validity
- doubtfulUncertain of truth
dubious · shady · sketchy · disreputable · unsavory · slick · seedy · sleazy
Inclined to mislead others
- dishonestInclined to deceive
- duplicitousDeliberately deceptive in nature
- two-facedInsincere and deceptive
- falseNot matching reality
treacherous · scheming · manipulative · conniving · slippery · shifty · sneaky · insincere
Disloyal and dangerous
- traitorousGuilty of betrayal
- disloyalUntrue to commitments
- faithlessUntrustworthy, lacking loyalty
- perfidiousDeliberately breaking faith
unfaithful · double-crossing · turncoat · backstabber · traitor · Judas · snake · sellout
undependable
Not consistently trustworthy
- unpredictableCannot be anticipated
- inconsistentLacking steady uniformity
- erraticLacking regularity or consistency
flaky · shaky · spotty · faulty · defective · fallible · questionable · dubious · iffy · tenuous
suspicious
Inclined to distrust
- suspectBelieve to be likely
- fishyArousing doubt, colloquially
- questionableOf uncertain validity
doubtful · dubious · shady · sketchy · disreputable · unsavory · slick · seedy · sleazy · unverified
deceitful
Inclined to mislead others
- dishonestInclined to deceive
- duplicitousDeliberately deceptive in nature
- two-facedInsincere and deceptive
false · treacherous · scheming · manipulative · conniving · slippery · shifty · sneaky · insincere · disingenuous
treacherous
Disloyal and dangerous
- traitorousGuilty of betrayal
- disloyalUntrue to commitments
- faithlessUntrustworthy, lacking loyalty
perfidious · unfaithful · double-crossing · turncoat · backstabber · traitor · Judas · snake · sellout · defector
untrustabletrustable
Worthy of confidence
trustworthy · reliable · dependable · unfailing · consistent
trust, trustable, trusts, trusted, trusting, trusty, trustee, trustful, trustless