- not reasonable; not showing good judgment
- excessive: beyond normal limits; "excessive charges"; "a book of inordinate length"; "his dress stops just short of undue elegance"; "unreasonable demands"
- (unreasonably) not in a reasonable or intelligent manner; "she reacted unreasonably when she learned she had failed"
- In an ombudsman investigation, "unreasonable" means that the agency:
- Unreasonable uses are non-beneficial uses that, furthermore, are not reasonable; that is, they are without economic, practical, or other justification.