be on the crest of a wave
US /bi ɑn ðə krɛst əv ə weɪv/
UK /bi ɑn ðə krɛst əv ə weɪv/
1.
to be very successful for a period of time
:
•
The company is currently on the crest of a wave, with record sales and profits.
•
After winning the championship, the team was on the crest of a wave.