innocuous
ih-NOK-yoo-usadjMeaning harmless; not likely to hurt or upset anyone
Memory hook in-KNOCK-YOU-ous: it can’t KNOCK YOU over. The huge beach ball bounces right into Theo, but it is so soft it can’t knock you over; it is innocuous.
Her innocuous question about the weather somehow started a long argument.
In context Mom worried that the new board game would start fights, but it proved innocuous: the worst thing that could happen was losing a turn and having to cluck like a chicken.
Similar harmless, inoffensive, mild, safe
Opposite harmful, offensive, dangerous
From Latin innocuus, “harmless”: in- (not) + nocere (to harm).