The phrase "before schedule" refers to an event or task that is completed or accomplished earlier than expected. Synonyms for this phrase include "ahead of time", "earlier than planned", "premature", "in advance", "previously", "sooner than anticipated", "beforehand", "prematurely", and "previously mentioned". These synonyms can be used interchangeably depending on the context of the situation. When something is completed before schedule, it often indicates that the person or group involved was efficient and effective in their work, and can lead to a sense of satisfaction and accomplishment.