steepstart
nounUK /ˈstiːpstɑːt/
US /ˈstiːpstɑːrt/
A steepstart is a very quick beginning that goes up fast.
The rocket had a steepstart and shot straight into the sky.
OTHER MEANINGS
2. A beginning that is hard and sudden, like climbing a steep hill right away.
The race had a steepstart, with runners going uphill at once.
3. A sudden increase that happens very quickly.
Prices took a steepstart after the holiday.
4. The first sharp part of a climb or slope.
We rested before the steepstart of the mountain trail.