1. a. To refrain from harming, injuring, destroying, or killing: The general spared the city from a bombardment.
b. To leave undamaged or unharmed: The oldest trees in the forest were spared from the fire.
c. To refrain from denouncing or distressing; treat leniently or with consideration: The teacher spared the student's feelings by not criticizing her.
d. To allow (someone) to avoid experiencing or doing (something): spared myself the trouble of going to the store.
2. a. To hold back from; withhold or avoid: spared no expense for the celebration.
b. To use or supply with restraint: Don't spare the mustard.