The phrase "thinks likely" refers to a state of mind that suggests the possibility of something happening. Antonyms for this phrase include words like "doubtful," which indicates a lack of confidence or belief. Another antonym is "improbable," which implies that something is unlikely to happen. Other antonyms for "thinks likely" might include "uncertain," "skeptical," or "disbelieving," all of which suggest a lack of conviction or faith in a particular outcome. Ultimately, the antonyms for "thinks likely" are words that connote doubt, uncertainty, and disbelief, with an emphasis on the idea that something may not happen as predicted.