irrational
pronunciation
How to pronounce irrational in British English:
UK [ɪˈræʃənl]
How to pronounce irrational in American English:
US [ɪˈræʃənl]
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- Adjective:
- not consistent with or using reason
- real but not expressible as the quotient of two integers
Word Origin
- irrational (adj.)
- late 15c., "not endowed with reason" (of beats, etc.); earlier (of quantities) "inexpressible in ordinary numbers" (late 14c.); from Latin irrationalis "without reason," from assimilated form of in- "not, opposite of" (see in- (1)) + rationalis "reason" (see rational). Meaning "illogical, absurd" is attested from 1640s. Related: Irrationally.
Antonym
Example
- 1. So they can manipulate you into making irrational decisions .
- 2. Those fears are based on irrational judgments about the future .
- 3. Most investors are intelligent people , neither irrational nor insane .
- 4. As with love and sex , financial decisions made by individuals , corporations and governments are emotional and tend toward the irrational .
- 5. The problem is one of irrational economic policy .