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

• immunisation
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• immunochemistry
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• immunodeficient
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• immunofluorescence
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• immunoglobulin
• immunoglobulin A
• immunoglobulin D