take the plunge
To begin any major commitment.
And as scientists studying the subject, we will have to conclude that she will take the plunge only if she suffers from overconfidence bias or is innately risk-loving.
plunge
UK /plʌnd͡ʒ/ US /plʌnd͡ʒ/
verb 6noun 5
Definitions
verb
1
To thrust into liquid, or into any penetrable substance; to immerse.
to plunge the body into water
"Most of them don't wash. Those who do usually plunge their head into some brook or rill, if there happens to be one about."
2
To cast, stab or throw deep and fast into some thing, state, condition or action.
to plunge a dagger into the breast
to plunge a nation into war
3
To baptize by immersion.
4
To dive, leap or rush (into water or some liquid); to submerge oneself.
he plunged into the river
5
To fall or rush headlong into some thing, action, state or condition.
to plunge into debt
to plunge into controversy
noun
1
The act of plunging or submerging.
2
A dive, leap, rush, or pitch into (into water).
to take the water with a plunge
A plunge into the sea
3
A swimming pool.
4
The act of pitching or throwing oneself headlong or violently forward, like an unruly horse.
5
Heavy and reckless betting in horse racing; hazardous speculation.
verb
1
To remove a blockage by suction.
to plunge a toilet
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