The phrase "sees to" can mean various things like attend to, look after, deal with, arrange, take care of, and manage. Depending on the context in which it is used, the phrase can have different synonyms that express a similar meaning. For instance, in the context of "sees to it that," the phrase can be replaced with words like ensures, confirms, guarantees, verifies, or checks. Similarly, in the context of "sees to the needs/wants of," the phrase can be substituted with terms like caters to, addresses, attends, satisfies, or serves. Overall, the synonyms of "sees to" convey the idea of taking responsibility for something and ensuring its proper handling.