1. Not in a reasonable or intelligent manner
   "she reacted unreasonably when she learned she had failed" 
2. To a degree that exceeds the bounds or reason or moderation
   "his prices are unreasonably high"
   - immoderately, unconscionably

See also: unreasonable

Antonym: reasonably

• extracurricular activity
• extraditable
• extradite
• extradition
• extrados
• extradural
• extragalactic
• extragalactic nebula
• extrajudicial
• extralegal
• extralinguistic
• extramarital
• extramarital sex
• extramundane
• extramural
• extraneous
• extraneousness
• extranet
• extraordinaire
• extraordinarily
• extraordinariness
• extraordinary
• extrapolate
• extrapolation
• extrasensory