Wiktionary
negative reinforcement
n. The removal of a discouraging stimulus associated with a particular behaviour with the result that it is more likely to be repeated
Usage examples of "negative reinforcement".
To understand such mechanisms it is not adequate to reduce them to linear sequences of stimulus-response, positive and negative reinforcement.
Much mysterious human behavior is the result of negative reinforcement.
Thus, you may operantly escape the fear or placate the irritating child, which is followed by relief (negative reinforcement).