upswing
up
+
swing
https://gyazo.com/abcaa6dc78c911375b1a5d93fb824681
source:
creation GIF - Find & Share on GIPHY
noun
an
increase
in
strength
or
quantity
; an
upward
trend
: 力や性質の増加; 上向きの傾向
〖通例単数形で〗 «…の» (急激な)向上, 増加 «in»
e.g.
cigar smoking has been
on the upswing
.: 喫煙は増加中だ。
on the upswing
: 増加, 上昇中で