Beat in means to condition or prepare something through regular and repeated use or practice. It is a term commonly used in sports and training. Synonyms for beat in include acclimate, adapt, break in, drill, exercise, familiarize, habituate, indoctrinate, practice, season, and train. These words all share the same meaning of preparing something or someone to function efficiently and effectively. Whether it's breaking in a new pair of shoes or training for an athletic event, the process of beating in enables one to become comfortable and skilled with the task at hand. These synonyms provide multiple options for describing the process of conditioning or preparing something or someone.