"Canning it" is an informal phrase that means to stop doing something or to keep quiet. Its antonyms would be to continue doing something or to speak up. When someone decides to persist with a task or project, they are not "canning it." Similarly, when a person opposes keeping quiet and voices their opinion, they are not "canning it." Some other antonyms that can be used for "canning it" are not giving up, carrying on, persisting, continuing, persevering, vocalizing, or expressing. Using different antonyms, one can convey the opposite of "canning it" with precision and accuracy.