Spring for Definition 1 of 1Pro Tip 1/3Generosity Implication Using 'spring for' often suggests generosity or a desire to celebrate something special. For her birthday, I'll spring for a spa day. Pro Tip 2/3Informal Usage 'Spring for' is casual and best used in informal situations or among friends. Let's hang out tonight—I'll spring for pizza. Pro Tip 3/3Not Obligatory The phrase 'spring for' implies a voluntary act of paying, not something required or expected. Since you helped me move, I'll spring for lunch.