monter en flèche betyder på engelska

soar [soared, soaring, soars]▼◼◼◼(to rise rapidly or high)
verb
[UK: sɔː(r)] [US: ˈsɔːr]

skyrocket [skyrocketed, skyrocketing, skyrockets]▼◼◼◼(to increase suddenly and extremely)
verb
[UK: ˈskaɪ.rɒkɪt] [US: ˈskaɪ.ˌrɑːkət]