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1
in a way that lacks reason, logic, or clear thinking
- He reacted irrationally to the news, shouting and pacing the room.
- She was irrationally afraid of elevators despite never having had a bad experience.
- The markets responded irrationally to the minor policy change.
- He behaved irrationally, ignoring all advice from his team.
- They acted irrationally out of panic and made the situation worse.
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