plunge
B2Neutral - common in both spoken and written language, especially in news, literature, and everyday contexts.
Definition
Meaning
To fall, move, or thrust suddenly and quickly downwards or forwards, often into something (like water).
To involve oneself suddenly or decisively in a state, activity, or condition (e.g., into debt, darkness, or an activity). Also, a sudden, sharp decrease or fall.
Linguistics
Semantic Notes
Often implies a sudden, forceful, and often uncontrolled or risky movement. For nouns, it often describes a sudden, significant decrease (e.g., share prices) or an act of jumping/diving.
Dialectal Variation
British vs American Usage
Differences
Minimal lexical difference. British English more readily uses 'take the plunge' (to commit). 'Plunge pool' is common in both.
Connotations
Identical in both varieties.
Frequency
Similar frequency; slightly higher in financial contexts in American English (e.g., 'market plunge').
Vocabulary
Collocations
Grammar
Valency Patterns
[Sb] plunge [into sth][Sb] plunge [sth] into [sth][Sth] plunge [from X] [to Y][Sb] take the plungeVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “take the plunge (to finally commit to something important/risky)”
- “plunge in at the deep end (to start a difficult task without preparation)”
Usage
Context Usage
Business
A sharp fall in prices or values. 'The company's shares took a plunge after the profit warning.'
Academic
Used to describe a sudden shift or engagement. 'The country plunged into a period of political instability.'
Everyday
Jumping into water or starting something suddenly. 'I'm going to plunge into the pool to cool off.'
Technical
In engineering/physics, a sudden immersion or thrust. 'The piston plunges into the cylinder.'
Examples
By Part of Speech
verb
British English
- He decided to plunge into the icy lake for charity.
- The temperature is set to plunge overnight.
- They plunged the country into a new crisis.
American English
- She plunged her hands into the warm water.
- Stocks plunged after the Fed announcement.
- He took a deep breath and plunged right into his speech.
adverb
British English
- No standard adverbial form. 'Plungingly' is non-standard/archaic.
American English
- No standard adverbial form. 'Plungingly' is non-standard/archaic.
adjective
British English
- The hotel had a lovely plunge pool.
- They took a plunge bath.
American English
- After the sauna, we used the plunge pool.
- The dive was a plunge descent.
Examples
By CEFR Level
- The boy plunged into the swimming pool.
- It was so hot, I wanted to plunge into cold water.
- House prices have plunged this year.
- She plunged the knife into the cake to cut it.
- The news plunged the family into mourning.
- Investors are worried the currency might plunge further.
- The scandal plunged his hitherto stellar reputation into disrepute.
- The nation was plunging headlong into civil conflict.
Learning
Memory Aids
Mnemonic
Think of a PLUNger (for sinks) - it makes a sudden, forceful, down-and-up movement, just like the verb 'to plunge'.
Conceptual Metaphor
LIFE/ACTIVITY IS WATER ('plunge into a project', 'take the plunge'). BAD SITUATIONS/STATES ARE DEPTHS ('plunge into despair', 'plunge into debt').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'план' (plan) – it's a false friend.
- Not always 'нырять' (to dive voluntarily). 'Plunge' can be involuntary/accidental, e.g., 'The car plunged off the cliff.'
- For financial 'plunge', use 'обвал' or 'резкое падение', not 'погружение'.
Common Mistakes
- Using 'plunge' for a gentle descent (use 'descend' or 'sink').
- Confusing 'plunge' (sudden, forceful) with 'dip' (gentle, brief).
- Incorrect preposition: 'He plunged at the water.' (Correct: 'plunged into the water').
Practice
Quiz
In which sentence is 'plunge' used CORRECTLY?
FAQ
Frequently Asked Questions
No. While the core image involves water (diving in), it's extensively used metaphorically for sudden involvement (plunge into work) or sharp decreases (temperature plunge).
Both can mean to jump into water. 'Plunge' emphasises the suddenness and force, and can be accidental. 'Dive' is more controlled, often intentional and skilled. Metaphorically, 'plunge' is for negative states (debt, darkness), 'dive' is for activities (dive into a book).
Yes. As a noun, it means a sudden fall or jump (e.g., 'a plunge in temperatures', 'a refreshing plunge in the sea').
It's an idiom meaning to finally decide to do something important, difficult, or risky after thinking about it for a long time (e.g., start a business, get married).