Home › Words › S › subreasonsubreasonsubreason means A subsidiary reason.Among words judged in Lexicurio's Arena, subreason ranks #2,614 of 42,762 for Qualifying.EtymologyFrom sub- + reason. Piecewise doublet of subratio.nounA subsidiary reason.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.subcause 69% match — A cause forming part of a larger cause. vs subreason →subeffect 66% match — A secondary or subsidiary effect. vs subreason →subpurpose 65% match — A subsidiary purpose; subgoal vs subreason →suberror 65% match — A lesser error making up part of a greater error. vs subreason →subidea 65% match — A secondary or subsidiary idea. vs subreason →subassumption 64% match — A secondary or subsidiary assumption. vs subreason →subattribute 63% match — A lesser or secondary attribute. vs subreason →subconcept 63% match — A secondary or subsidiary concept. vs subreason →