Definition of DUBIOUS

giving good reason for being doubted, questioned, or challenged <any letter bearing the signature of Geronimo would be of dubious authenticity, to say the least>
slow to begin or proceed with a course of action because of doubts or uncertainty <I'm dubious about our plan to go hang gliding without having had any training>
Synonyms cagey (also cagy), disinclined, dubious, indisposed, loath (also loth or loathe), reluctant, reticent
Antonyms disposed, inclined
not feeling sure about the truth, wisdom, or trustworthiness of someone or something <dubious about a diet that claims I can eat all I want and still lose weight>

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