clemency
Meaning: mercy
Usage: After he forgot their anniversary, Martin could only beg Maria for clemency.
condone
Meaning: to pardon, deliberately overlook
Usage: He refused to condone his brother’s crime.
lenient
Meaning: demonstrating tolerance or gentleness
Usage: Because Professor Oglethorpe allowed his students to choose their final grades, the other teachers believed that he was excessively lenient.
reprieve
Meaning: a temporary delay of punishment
Usage: The deadline extension gave the team a brief reprieve.