What is another word for unreasonable?

Need synonyms for unreasonable? Here's a list of words from our thesaurus that you can use instead.

Not using or following good reasoning
“… an unreasonable respect for a man who did not deserve it.”
Not guided by or based on good sense
“He felt that the young men were being unreasonable and threatening.”
Having no basis in reason or fact
“… an unreasonable assumption.”
Unfair and excessive
Unreasonable increases in the price of petrol.”
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