take off
phrasal verb with take verb [ T ] uk/teɪk/ ustook | taken
to suddenly start to be successful:
She became an ethical financial adviser ten years ago, just as green investing began to take off.
He taught for years before his writing career took off.
FINANCE
to suddenly increase in value or amount:
The shares took off, climbing more than 130%.
The time to protect your finances from inflation is now, before prices really take off.