plunge in
Definition of plunge in
1 : to push (something) into something quickly and forcefully The nurse grabbed his arm and plunged the needle in.
2 : to start doing something with enthusiasm and energy It was a big project, so we all just had to plunge in and get started.
From the M-W Editors
Word by Word Definitions
plungeplay
: to cause to penetrate or enter quickly and forcibly into something
: to cause to enter a state or course of action usually suddenly, unexpectedly, or violently
: to thrust or cast oneself into or as if into water
: an act or instance of plunging : dive
: swim
See the full definition of plunge
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