The form typecast is used in the present tense and is the past tense and past participle. If an actor is typecast, they play the same type of character in every play or film that they are in. I didn't want to be typecast and I think I've maintained a large variety in the roles I've played African-Americans were often typecast as servants, entertainers or criminals
Changing an entity (a variable or an object) of one datatype into another. In other words, typecasting allows you to take a value that belongs to one type and "cast" it into another type. See also: type conversion