will

/wɪl/ n [C/U] (MENTAL POWER)

Definition

› the mental power used to control and direct your thoughts and actions, or a determination to do something, despite any difficulties or opposition: [C] He’ll need an iron will to stick to that diet. [U] After six months in the hospital, she lost the will to live (= the desire and determination to stay alive). › Someone’s will is also what the person wants to happen: [U] I went there against my will.

(Definition of will n (MENTAL POWER) from the Cambridge Academic Content Dictionary © Cambridge University Press)