Mechanically

I drank glass after glass of the wine—not that I enjoyed its flavor any more, but mechanically, as it were, and with a sort of hope thereby to drown unpleasant reminders.

You don't even know how to use a digital camera? How mechanically illiterate can you be? All you need to do is press the shutter.

He did it mechanically.

Ziri mechanically waved at the cops.

Then a faintness came over her; she recalled the Viscount who had waltzed with her at the chateau, and his beard exhaled like this air an odour of vanilla and citron, and mechanically she half-closed her eyes the better to breathe it in.

Here the potatoes are harvested mechanically.

mechanically speaking

My fears, however, made me mechanically close my thighs; but the very touch of his hand insinuated between them, disclosed them and opened a way for the main attack.

"Of what avail," and her eyes wandered mechanically round, "is all the luxury by which I am surrounded, if it serve only as a barrier to all kindly feelings?"

Provided they stick to their legal priors, rather than voting mechanically as Republican appointees, the justices seem likely to split on some of these cases — with real consequences for Trump’s agenda.