Take the plunge
idiom
To decide to do something important, risky, or difficult, especially after hesitating or thinking about it for a long time; to commit to getting married.
For months, Sara kept looking at job listings abroad. She was scared to leave everything behind. One morning, she finally took the plunge and submitted her application. Within weeks, she had a new job in a brand-new city.
This meaning is about making a big decision after a period of doubt or hesitation. Imagine you’ve been thinking about quitting your stable job to start your own business for over a year. One day, you finally take the plunge and hand in your resignation. This is taking the plunge — committing to something that feels scary but exciting. You might say “I finally took the plunge and signed up for the course” or someone could mention “we took the plunge and moved abroad.” Or picture someone standing at the edge of a pool, nervous about the cold water, and then just jumping in. The word carries a feeling of courage mixed with nervousness. ✏️ The image comes from diving into deep water — you can’t go halfway, you either jump or you don’t.
Vivid example: Tom had been dreaming about opening a café for years. Last spring, he finally took the plunge and signed the lease on a small shop downtown. It was terrifying, but he had never felt more alive.
This meaning is specifically about deciding to get married. Imagine a couple who have been together for five years, living together, sharing everything. One day, their friends ask “so when are you two going to take the plunge?” This is using take the plunge to mean making the commitment to marry. You might hear “they finally took the plunge last summer” or “are you ready to take the plunge?” Or think about a man nervously holding a ring box in his pocket all evening, trying to find the right moment to take the plunge and propose. The expression suggests marriage is a big, exciting leap. ✏️ This usage treats marriage as the ultimate “big decision” — people often use it in a lighthearted, teasing way when asking couples about their plans.
Vivid example: After dating for three years, Jake and Mia decided it was time. They took the plunge at a small beach ceremony with close friends. Everyone said they had never seen the couple look so happy.
Examples from the street:
“I’ve been thinking about it for months — I’m finally going to take the plunge.” → I’ve been hesitating for a long time, but I’ve decided to go ahead and do it
“She took the plunge and quit her job to travel the world.” → She made the bold decision to leave her secure job and go travelling
“We weren’t sure about buying a house, but we took the plunge and put in an offer.” → We were nervous about such a big commitment, but we went ahead and did it anyway
Take the plunge as making a bold or risky decision — VERY COMMON:
– finally take the plunge → make a decision you’ve been putting off for a long time
– decide to take the plunge → make up your mind to do something bold
– ready to take the plunge → feeling prepared to commit to a big decision
– take the plunge and (do something) → go ahead and do the scary or risky thing
– afraid/scared to take the plunge → too nervous to commit to a big decision
– encourage/persuade someone to take the plunge → push someone towards making a bold move
– glad/happy (that) someone took the plunge → pleased about having made the decision, looking back
– before/after taking the plunge → before or after committing to the big decision
Example Sentences
1. After years of talking about it, she finally took the plunge and started her own business
→ After a very long time of just discussing the idea, she eventually made the bold decision to open her own company.
2. I’ve been thinking about moving abroad, but I haven’t decided to take the plunge yet
→ I’ve been considering relocating to another country, but I haven’t committed to such a big life change yet.
3. Are you ready to take the plunge and ask her to marry you?
→ Do you feel prepared to go ahead and propose to her?
4. He took the plunge and signed up for a marathon, even though he’d never run more than 5K
→ He went ahead and registered for the long-distance race, despite never having covered more than a short distance before.
5. A lot of people are afraid to take the plunge when it comes to investing in the stock market
→ Many people are too nervous to commit their money when it comes to buying shares.
6. My friends encouraged me to take the plunge and apply for the job in New York
→ The people close to me pushed me to go ahead and put myself forward for the position in New York.
7. We’re so glad we took the plunge — buying this house was the best decision we ever made
→ We’re really pleased we went through with it — purchasing this property turned out to be the greatest choice of our lives.
8. Before taking the plunge, make sure you’ve done your research and understand the risks
→ Before committing to such a big decision, ensure you’ve gathered enough information and know what could go wrong.
9. I was nervous at first, but after taking the plunge, I realised there was nothing to worry about
→ I felt anxious at the start, but once I’d committed and done it, I understood my fears had been unnecessary.
10. Sometimes you just have to take the plunge — overthinking will only hold you back
→ Sometimes you simply need to make the bold move — analysing things too much will only stop you from progressing.
Learner Examples
1. Many students are afraid to take the plunge and speak English in front of the class, but that’s the only way to build real confidence
→ A lot of learners are too nervous to go ahead and use English out loud with their classmates, but that’s the only path to developing genuine self-assurance.
2. If you want to improve your fluency, take the plunge and start having conversations with native speakers — mistakes are part of the process
→ If you want to get better at speaking naturally, make the bold move and begin talking with people who speak English as their first language — errors are a normal part of learning.
✔ Native usage tips
– Almost always about a decision, not a physical action — despite the water imagery, native speakers use this idiom for life decisions: changing jobs, getting married, starting a business, moving abroad. It’s rarely about literally jumping into water
– Implies long hesitation beforehand — you only “take the plunge” after thinking about something for a while. If you make a quick, impulsive decision, native speakers would more likely say “I just went for it” rather than “I took the plunge”
– Generally positive in tone — this expression carries a sense of courage and excitement. People usually say it with admiration or encouragement, not to describe a bad decision. If the outcome was negative, they’d more likely say “I made the mistake of…”
– Often used with “finally” — because hesitation is built into the meaning, you’ll very frequently hear “finally took the plunge.” This is the most natural and common combination
– British vs American: equally common — this idiom is used naturally in both British and American English with no difference in meaning or frequency
– Don’t confuse with “take a plunge” — “take a plunge” (with “a” instead of “the”) can literally mean diving into water. “Take THE plunge” is the fixed idiom meaning to make a big decision. The article matters here
✔ Similar expressions / words
– Bite the bullet → similar courage involved, but focuses more on doing something unpleasant or painful rather than exciting; “take the plunge” is about bold new beginnings, while “bite the bullet” is about enduring something you dread
– Go for it → much more casual and spontaneous; used as direct encouragement in the moment; doesn’t carry the same weight of long deliberation that “take the plunge” implies
– Make the leap → very close in meaning and tone; slightly more formal; often used in professional or career contexts like “she made the leap from corporate law to teaching”