The difference between Dubious and Iffy
When used as adjectives, dubious means arousing doubt, whereas iffy means of dubious authenticity, legitimacy or legality.
check bellow for the other definitions of Dubious and Iffy
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Dubious as an adjective:
Arousing doubt; questionable; open to suspicion.
Examples:
"After he made some dubious claims about the company, fewer people trusted him."
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Dubious as an adjective:
In disbelief; wavering, uncertain, or hesitating in opinion; inclined to doubt; undecided.
Examples:
"She was dubious about my plan at first, but later I managed to persuade her to cooperate."
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Iffy as an adjective (slang):
Of dubious authenticity, legitimacy or legality.
Examples:
"He's selling new CD players for £20 each – that sounds a bit iffy to me."
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Iffy as an adjective:
Uncertain or chancy.
Examples:
"The weather is still iffy for Saturday's shuttle launch."