Nya siminya Share definition Flag A common term used by Sonans to express their feelings, A sonan might shout this out loud when he feels like expressing his feelings. Sonan: "NYA SIMINYA" ME: "Dude what?' Sonan: "Its how I express my feelings" Nya siminya by HaramSquadMember January 7, 2017 Get the Nya siminya mug.