For: (Prep. ) 1 denotes usefulness, purpose or destination of an action: "The corkscrew serves, as its name implies, to remove corks from bottles ". 2 designates the time ends or something happens: "Your dress will be ready for Thursday " I said the seamstress. 3. with relation to: "They paid little for how much working ". 4. with the aim of: "I prepared a dessert to give it to my mom for her birthday ".