Is it possible to temporarily suspend snapping with a shortcut Key in Qgis, like its possible holding down space in Arcmap?
Not sure if turning it on/off with a single key is supported. You can create a shortcut to bring up the snapping options from:
Settings > Configure Shortcuts > Snapping Options...
This lets you quickly set the option Snap to on/off instead of going through the toolbar.
I would be interested to see if there is a method using a single key but hope this helps anyway!