All take the plunge synonyms

verb take the plunge

• get going — an offspring or the total of the offspring, especially of a male animal: the get of a stallion.
• have a hand in — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
• get one's feet wet — to begin to participate in something
• lead the way — manner, mode, or fashion: a new way of looking at a matter; to reply in a polite way.
• go in — go indoors
• make one's move — to pass from one place or position to another.
• lead off — most important; principal; leading; first: lead editorial; lead elephant; lead designer.
• go in for — to move or proceed, especially to or from something: They're going by bus.
• break ground — to do something that has not been done before
• break the ice — to relieve shyness or reserve, esp between strangers
• bring forward — If you bring forward a meeting or event, you arrange for it to take place at an earlier date or time than had been planned.
• fall into — to drop or descend under the force of gravity, as to a lower place through loss or lack of support.
• cross the rubicon — If you say that someone has crossed the Rubicon, you mean that they have reached a point where they cannot change a decision or course of action.