up·swing 
/ˈʌpˌswɪŋ/ noun
plural up·swings /ˈʌpˌswɪŋ/ noun [count] 1 : a situation in which something is increasing or becoming better
▪ Business is on the upswing. [=improving] — often + in ▪ an upswing in profits 2 : an upward swing
▪ an upswing of the arms
▪ Business is on the upswing. [=improving] — often + in ▪ an upswing in profits
▪ an upswing of the arms
