Added 10 October 2026 clear-thinking adjective Categories: Describing Words adjective ! Definition from WordNet 3.1, Princeton University. More about clear-thinking at Wordnik → Where our words come from → Not mentally confused; able to think clearly and act intelligently. Related Words: clearclearheadeduncloudedclearheadednessclearsightedclearnessclaritylevelheadednessrationality Back to today's word