Would it make sense to leave “break” as a synonym for ATTACK which is already an action applying to one thing? Write your rules about “Check attacking the valuable document…” which gives you all the attack words a player might use to try and break a thing.
Or, you can still make a new verb if you want, and reroute ATTACK to it which will include “break”. “Instead of attacking something: try schmeerping the noun. Understand “staple [something]” and “wedge [something]” as schmeerping.”