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

• lispingly
• lissom
• lissome
• lissomeness
• list
• list price
• list processing
• list system
• list-processing language
• listed
• listed security
• listen
• listen in
• listen up
• listener
• listening
• listening watch
• lister
• lister plough
• lister plow
• Listera
• Listera convallarioides
• Listera cordata
• Listera ovata
• listeria