un ‧ rea ‧ son ‧ a ‧ ble /ʌnˈriːz ə nəb ə l/ BrE AmE adjective
[ Word Family: noun : ↑ reason , ↑ reasoning , ↑ reasonableness ; adjective : ↑ reasonable ≠ ↑ unreasonable , ↑ reasoned ; verb : ↑ reason ; adverb : ↑ reasonably ≠ ↑ unreasonably ]
1 . not fair or sensible:
I think he’s being unreasonable.
Don’t let your boss make unreasonable demands on you.
it is unreasonable to do something
It’s unreasonable to expect you to work seven days a week.
It’s not unreasonable to ask him to help you.
2 . unreasonable prices, costs etc are too high
—unreasonably adverb :
unreasonably high prices