In this page: https://support.mozilla.org/en-US/kb/keyboard-shortcuts-perform-firefox-tasks-quickly Several commands do not have corresponding keybindings. In particular, the ones I'm interested in are "Go one word to the left/right" as shown in the attached image. Is there a reason why these are left out? Firefox is the only program on MacOS, that I have encountered, where it is impossible to have the caret skip words forward/backwards. I can use Karabiner-Elements to fix whatever weirdness might exist, but not if Firefox has no way to actually trigger that command, nor a way to rebind keys in order to do so either. Maybe I've missed something obvious. PS: Writing this was annoying, exactly for the reason explained. The weird thing is that CTRL+backspace is the only "make key X operate on a whole word instead of a single character" that actually works. For example, "backspace" removes a single character in text edit fields. "ctrl+backspace" would remove the whole word. PPS: I don't care too much if the modifier key is CTRL or CMD. I can rebind that. I just need it to either be *something*, or that one can set it to *something.