For me, sporty means manual transmission, something rapidly disappearing of course. I don't know of any car costing over $100 K with a manual today (maybe a loaded CT5). I'd add in two doors, a soft top, and smaller size in my own lexicon.
I also like "Q cars", cars that look pedestrian but are pretty hot, including the AMG above, and the BMW M series, the Caddy V series, and the like.
My most anti=sporty car is an older Honda Civic with an annoying exhaust set up, an automatic transmission, and really not much power.