The phrase "makes stick" refers to the ability of something to be successful or to have an impact. Antonyms for this phrase could include "fails to stick," "unsuccessful," "ineffective," "unmemorable," or "forgettable." These words convey the opposite meaning of "makes stick," implying that something did not leave a lasting impression or have any significant impact. Other antonyms for "makes stick" might include "diffuse," "dilute," "weaken," or "obscure." These words suggest that something has been watered down, diminished, or made less powerful, rather than having a strong presence that "makes stick" in people's minds.