The phrase "be able" refers to someone's ability to do something. There are many synonyms for "be able" that can be used to convey the same meaning. Some examples of such synonyms include "have the ability to," "have the capacity to," "be capable of," "possess the skill to," "be competent to," "be proficient to," "be accomplished to," "be talented to," "be qualified to," "be empowered to," "be authorized to," and "be permitted to." Using these synonyms can provide variety and depth to your writing, making your message more poignant and impactful.