Unreasonable

Part of speech: adjective

Pronunciation: /ʌnˈɹiːz.(ə)nə.bl̩/

Definitions

  1. Not fair, sensible, or willing to listen to logic; expecting or demanding too much
  2. Lacking fairness or sound judgment, often characterized by excessive expectations or a refusal to consider rational arguments
  3. Describing a state or behavior that is irrational, often involving unrealistic demands that disregard practicality or logic

Etymology: The term "unreasonable" finds its roots in the combination of the prefix "un-" and the base word "reasonable." The prefix "un-" is of Old English origin, derived from "un-", meaning "not" or "opposite of." This negative prefix has been used in English since before the 12th century, often to create antonyms from adjectives. The base word "reasonable" hails from the Latin "rationabilis," which translates to "able to be judged, reasonable," derived from "ratio," meaning "reason" or "calculation." This Latin term made its way into Old French as "raisonable," which retained a similar meaning. The adoption of "reasonable" into Middle English occurred around the late 14th century, marking the beginning of its use in the English lexicon to denote something that is fair, logical, or justifiable. The combination of "un-" with "reasonable" thus creates an adjective that describes a state of lacking reason, sound judgment, or fairness. The term entered English in the early 15th century, reflecting a growing complexity in the language as it absorbed new influences from Latin and French. Over time, the meaning of this term evolved to encompass not just a lack of reason but also an implication of excess or extremity. For example, something deemed "unreasonable" can imply actions or requests that are excessively demanding or unjust, going beyond mere irrationality to suggest an element of unfairness or outrageousness. In contemporary usage, this term has expanded to include various contexts, such as legal discourse, where it may describe actions that fall outside of what would be considered reasonable by societal standards, thus establishing a framework for judgments in both personal and professional arenas. Its adaptability in usage has made it a versatile term in English, applicable across various domains of discussion.

Synonyms: irrational, illogical, absurd, unjustifiable, excessive

Antonyms: reasonable, logical, justifiable, sensible, moderate