Exactly this. I take a hard stance against abbreviation in our team's codebases not solely because people might have trouble understanding what they mean (though when you take abbreviation to the extreme, i.e. words to single letters, that becomes a huge problem as well), but also because of the tendency for abbreviation to lead to an explosion in different slight variations of the same name used across the codebase to represent the same things, which increases the chances of missing important pieces in a refactor and decreases the chances of someone being able to find whatever they might be looking for.

Keeping naming conventions consistent across a codebase with multiple people working on it is hard enough to begin with. Abbreviation makes it even harder. Definitely not worth the few keystrokes saved, imho.