IPA: /ˈʌpˌswɪŋ/
KK: /ˈʌpˌswɪŋ/
A noticeable increase or improvement in something, such as business activity or a trend.
The company experienced an upswing in sales after launching the new product.
Upswing → It is formed from "up" (meaning higher or above) and "swing" (from Old English "swingan", meaning to move back and forth). The word "upswing" refers to a movement or trend that is moving higher or improving.
Think of something moving 'higher' ('up') and 'back and forth' ('swing') — that's why upswing means a positive increase or improvement.