A lot vs. Alot: 9 Grammatical Pitfalls
reversal re·ver·sal (rĭ-vûr'səl)
A change to an opposite condition, direction, or position.
A condition in which an individual has difficulty distinguishing the lowercase printed or written characters of particular letters: p from q; g or b from d; or s from z.
The change of an emotion into its opposite, as from love into hate.