Antonyms for the phrase "put finger on" include overlook, ignore, neglect, disregard, and miss. These words indicate a lack of attention to detail or an inability to identify the exact problem or issue at hand. In contrast, synonyms for "put finger on" might include discern, identify, locate, pinpoint, or detect. Such words suggest a keen sense of observation and the ability to accurately identify and address a problem. Whether working on a challenging project, analyzing a complex situation, or trying to diagnose a problem, being able to "put your finger on" the issue can be a key factor in success.