There are several synonyms for the phrase "hone in on," which means to focus on or direct attention to something specific. Some possible alternatives include "zero in on," "target," "concentrate on," "fixate on," "home in on," "zoom in on," "narrow down," "pinpoint," "identify," and "aim for." These terms can apply in a wide range of contexts, such as business strategy, personal goal-setting, creative pursuits, scientific research, and sports training. No matter what your field or interests are, honing in on key objectives and priorities is crucial for achieving success and making progress towards your desired outcomes.