'Did in' is a term which means to tire out or exhaust someone. There are several synonyms for this phrase that one can use to convey the same meaning in a different manner. Words like 'fatigue', 'weaken', 'sap', 'drain', 'enervate', 'debilitate', 'exhaust', 'wear out', and 'tire' can be used interchangeably with 'did in'. The usage of different synonyms enhances the clarity of the sentence and adds depth to the expression. Therefore, it is essential to have a wide range of synonyms in a person's vocabulary to convey the intended meaning precisely.