The word "deadbolting" refers to the process of securing a door or lock using a deadbolt. The antonyms for "deadbolting" include "unlocking," "opening," and "unlatching." These words denote the opposite action of securing a lock, which is to release it so that it can be easily opened. Other antonyms for "deadbolting" include "unfastening," "untangling," and "untwisting." These words can be used to describe the act of opening a lock that has become jammed or tangled. In essence, antonyms for "deadbolting" describe the opposite action of what it means to secure a lock, which is to release it and open it up.