IMHO selecting text (it doesn't detect double-clicking, it is a way to select a word implemented by the browser) is the intuitive way to do this. It gives me in

IMHO selecting text (it doesn't detect double-clicking, it is a way to select a word implemented by the browser) is the intuitive way to do this. It gives me instant feedback and doesn't distract me when I didn't mean to hover a word while reading.