Home › Words › S › simiousnesssimiousnesssimiousness means the quality of being simious.Among words judged in Lexicurio's Arena, simiousness ranks #13,009 of 42,762 for Qualifying.EtymologyFrom simious + -ness.nounThe quality of being simious.Definitions & examples from Wiktionary (CC BY-SA 3.0).