The term 'wear down' can be defined as to cause something to become weaker or less effective over time. This can be done in a variety of ways, such as FATIGUE (7 letters), ERODE (5 letters), TIRE (4 letters), ABRADE (6 letters), SAP (3 letters), GNAW (4 letters), GRIND (5 letters), eyes (4 letters), DECAY (5 letters), DRAIN (5 letters), DEGRADE (7 letters), tireout (7 letters), and CONVINCE (8 letters). FATIGUE is the process of becoming physically or mentally exhausted, while eroding is the gradual destruction of something by natural forces such as wind or water. Tiring is the process of becoming weary or exhausted, while abrading is the process of wearing away by friction. Sapping is the process of gradually weakening or draining the strength of something, while gnawing is the process of biting or chewing on something. Grinding is the process of reducing something to small particles by crushing it, while decaying is the process of gradually breaking down or rotting. Draining is the process of emptying something of its contents, while degrading is the process of reducing the value or quality of something. Tireout is the process of becoming very tired, while convincing is the process of persuading someone to believe or do something. All of these processes can be used to wear down something over time.