Open English Wordnet
Nouns
(n)reversal, turn aroundturning in an opposite direction or position“the reversal of the image in the lens”
Verbs
(v)swing around, swing about, turn aroundturn abruptly and face the other way, either physically or metaphorically“He turned around to face his opponent”, “My conscience told me to turn around before I made a mistake”
(v)turn aroundimprove dramatically“The new strategy turned around sales”, “The tutor turned around my son's performance in math”
(v)turn around, pick upimprove significantly; go from bad to good“Her performance in school picked up”