adverb
1. not in a reasonable or intelligent manner
-
she reacted unreasonably when she learned she had failed
• Ant: ↑reasonably
• Derived from adjective: ↑unreasonable
2. to a degree that exceeds the bounds or reason or moderation
-
his prices are unreasonably high
• Syn: ↑immoderately
• Ant: ↑moderately (for: ↑immoderately), ↑reasonably
• Derived from adjective: ↑immoderate (for: ↑immoderately), ↑unreasonable
Useful english dictionary. 2012.