How to "snap selection to word boundaries" with trackpad?

What I mean by this is that with a mouse, if you double click in the middle of a word (in any selectable piece of text) and then drag without releasing the second click, the word you double-clicked is snap selected or selected in whole and from then on, every word you drag over is also selected in whole.

But when you use a trackpad, double tapping simulates a single click and a dragging start, so I wonder how would one simulate a double click + drag.

Of course you can also click the trackpad as a regular mouse, so that's one way, but unfortunately mine got jammed somehow (and a hell of different size and shape screws is getting me from trying to fix it) so that won't work for me right now.