Definition, synonyms and related words
plural of spare
"The old car has two spares in the trunk, just in case a tire goes flat."
Third-person singular simple present indicative form of spare
"She spares no expense to ensure her children have everything they need."
In plain English: To spare something means to choose not to use it, hurt someone, or give them as a gift instead of taking what they need.
"He spares no effort to help his friends whenever they need him."