deluded
C1Formal to informal. More common in evaluative or critical contexts.
Definition
Meaning
Believing something that is not true; holding false beliefs, especially persistently.
Someone who is deluded is mistaken or misled, often to a significant degree, and may be out of touch with reality. The state can be self-inflicted (through wishful thinking) or the result of being deceived by others. It often implies a degree of stubbornness or a lack of awareness.
Linguistics
Semantic Notes
"Deluded" is primarily a past participle adjective. While the verb "delude" is transitive (e.g., 'He deluded himself'), the adjective "deluded" describes the state of the person who has been deceived or has deceived themselves. It often carries a negative or pitying judgment.
Dialectal Variation
British vs American Usage
Differences
Usage and meaning are identical. Spelling differences follow standard patterns (e.g., in related words: 'delusion'/'delusional' same in both).
Connotations
Slightly stronger negative/pitying connotation in British English, often implying foolishness. In American English, it can edge closer to clinical or psychological contexts.
Frequency
Comparable frequency in both dialects.
Vocabulary
Collocations
Grammar
Valency Patterns
BE deluded (into believing/thinking something)BE deluded about somethingdelude oneself into V-ingVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “labour under a delusion (UK) / labor under a delusion (US)”
Usage
Context Usage
Business
Used to describe unrealistic market expectations or flawed strategies: 'The CEO was deluded about the company's ability to dominate the market overnight.'
Academic
Common in psychology/philosophy texts to describe cognitive states. In critical theory, can describe ideological false consciousness.
Everyday
Used to describe someone with persistent, obviously false beliefs: 'If you think you can pass without studying, you're deluded.'
Technical
In clinical psychology, a key feature of delusional disorders, though 'delusional' is the more precise clinical term.
Examples
By Part of Speech
verb
British English
- She had deluded herself into thinking the deadline was flexible.
- They were not easily deluded by the politician's empty promises.
American English
- He deluded himself about his chances of winning.
- Don't let flashy marketing delude you into buying a poor product.
adverb
British English
- He deludedly believed he could finish the marathon without training.
- (Rarely used)
American English
- She walked away, deludedly confident in her flawed plan.
- (Rarely used)
adjective
British English
- He's a deluded fool if he thinks that plan will work.
- The manifesto was based on a series of deluded assumptions.
American English
- She's completely deluded about her singing ability.
- It was a deluded attempt to fix the problem overnight.
Examples
By CEFR Level
- (Not typical at A2 level)
- He is deluded if he thinks the test will be easy.
- She was deluded by his kind words.
- The team was hopelessly deluded about their chances of success.
- Many people are deluded into believing these get-rich-quick schemes.
- His deluded worldview prevented him from acknowledging the systemic issues at play.
- The cult leader's followers were tragically deluded, surrendering all their possessions.
Learning
Memory Aids
Mnemonic
Imagine someone 'DE-luded' - having the LUDE (a playful, false reality) taken away from them, revealing the truth.
Conceptual Metaphor
FALSE BELIEF IS A VEIL / CLOUD: 'He was so deluded, he couldn't see the truth right in front of him.'
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'обманутый' (deceived). 'Deluded' implies a deeper, often self-sustained false belief, closer to 'заблуждающийся' or 'введённый в заблуждение'. It is not a simple one-time trick.
Common Mistakes
- Using 'delusional' and 'deluded' interchangeably. 'Delusional' is more clinical and describes a tendency; 'deluded' describes a current state. 'He is a delusional person' vs. 'He is deluded (right now).'
Practice
Quiz
Which sentence uses 'deluded' correctly?
FAQ
Frequently Asked Questions
'Deluded' is an adjective describing someone who currently holds false beliefs. 'Delusional' is an adjective describing a person or their thinking as characterized by delusions, implying a more persistent or pathological state. 'Delusional' is stronger and more clinical.
Extremely rarely. It is almost always negative or pitying. A marginally positive use might be: 'His deluded optimism kept the team's spirits up against all odds,' but this still highlights the falseness of the belief.
Both are common and correct. 'Deluded into thinking' is more frequent and formal. 'Deluded to think' is slightly more informal and direct.
It can be perceived as harsh, dismissive, or insulting when used directly about a person, as it questions their grip on reality. In professional or clinical settings, 'delusional' or specific descriptions are often preferred.
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