doubtful
/ˈdaʊtfəl/
noun
Meaning
A doubtful person or thing.
adjective
Meaning
Subject to, or causing doubt.
Experiencing or showing doubt, sceptical.
Undecided or of uncertain outcome.
Fearsome, dreadful.
Improbable or unlikely.
Suspicious, or of dubious character.
Unclear or unreliable.