Sink or swim
Definition 1 of 1
Pro Tip 1/3Success Pressure
The phrase implies a high-stakes situation where performance determines outcome without external assistance. 
In the final round of the competition, it was sink or swim for the contestants.
Pro Tip 2/3Cultural Metaphor
'Sink or swim' often refers to scenarios that test one's ability to endure or manage without guidance. 
She moved abroad alone for college—definitely a sink or swim experience.
Pro Tip 3/3Self-reliance
The phrase highlights situations where individuals must rely on their own resources or skills. 
With no one else to rely on, it's a sink or swim situation for small business owners.