"Mere word" is a phrase commonly used to describe something that is spoken but may not necessarily hold much value or weight. Synonyms for this phrase could include "empty talk," "hollow phrases," "meaningless chatter," or "superficial words." These terms emphasize the idea that something might be said, but it doesn't hold much significance or depth. Other possible synonyms for "mere word" could include "verbal fluff," "vague language," or "empty verbiage." By using these alternative phrases, one can convey the notion that something might be spoken without truly conveying a meaningful message.