(形容詞) 因汽車駕駛人沒有看到腳踏車騎士或行人所造成的事故的。亦寫成 Smidsy。這個字衍生自 "Sorry, mate, I didn't see you." (對不起,老兄,我沒有看到你)。

Simon Best, IAM chief executive, said: "SMIDSY moments are happening far too often, and very few people are prepared to take responsibility for their part in them. It's always someone else's fault. All road users need to be more aware of who they are sharing the road with, and the risks they present.
—Chris Knapman, "Drivers reminded to look out for vulnerable road users," The Telegraph, April 17, 2012

Wiggo's status as national treasure means this particular SMIDSY event gets widely reported. SMIDSY is the excuse inattentive motorists give to the cyclists and motorcyclists they skim or hit: "Sorry mate I didn't see you."
—Carlton Reid, "Bradley Wiggins is hit by a car, then the cyclist haters pile in," The Guardian, November 8, 2012