: to do or undertake something especially after a period of hesitation or uncertainty
Up to now, I've avoided growing roses … . But last winter the ripe catalogue shots of roses took hold in my imagination, and I decided to take the plunge. Michael Pollan
As with any new OS upgrade, it is prudent to wait awhile before taking the plunge, to make sure others have had a chance to find all the bugs. Peter H. Lewis
If you've considered buying an e-reader but haven't yet taken the plunge, there's no longer a need to wait. Joshua J. Romero