untrustworthy - Master This Word
Master this word with our 5-step learning method – Learn English in English
untrustworthy Word Meanings
- not deserving trust
- reliable; likely to deceive
- unreliable or suspect
untrustworthy Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
untrustworthy Phonetic & Pronunciation
UK
/ʌnˈtrʌs.twɜː.ði/
US
/ʌnˈtrʌstˌwɝː.ði/
untrustworthy Word Etymology
Root decomposition: un- (not) + trustworthy (worthy of trust). Historical origin: Middle English < Old French < Latin. Memory image: Imagine a person with a mask, hiding their true face, symbolizing deception, making it hard to trust.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
Untrustworthy describes someone or something that should not be trusted; it implies a pattern of unreliable behavior, deception, or hidden motives. In everyday speech you might call a spouse who regularly lies untrustworthy, or a company with repeatedly false advertising untrustworthy. The word sits between neutral, cautious language and stronger moral judgment, often used when there is evidence of bias, inconsistency, or manipulation. In formal writing it warns readers to question sources or claims. Keep in mind subtle connotations: a single mistake may not make someone untrustworthy, but repeated, deliberate falsehoods usually do. The etymology shows un- + trustworthy, highlighting a negation of trust.
Usage Reminders
- Use for a person or organization with a proven pattern of dishonesty.
- Not the same as 'unreliable' when talking about objects or deliverables.
- Can modify nouns: untrustworthy source, untrustworthy behavior.
- Tone is stronger and more moral-judgment heavy than 'unreliable'.
- Often appears in formal writing, journalism, and critical discussions.
Common Misconceptions
- Believing untrustworthy only applies to people, not institutions or brands.
- Confusing with 'unreliable' when the thing is defective or temporary.
- Assuming one mistake makes someone permanently untrustworthy.
- Thinking it's the same as 'untrusting' (which describes a person who is not trusting).
- Applying it to rumors or vague claims without evidence.
Thinking Differences
In English, untrustworthy signals a moral judgment about a pattern of behavior, not a one-off error. Learners often swap it with unreliable for things that fail to work, rather than people who lie or cheat. It also carries stronger tone and can feel judgmental in casual talk.
Learning Tips
- Identify the subject's pattern of behavior before labeling as untrustworthy.
- Compare with unreliable to decide if it’s about people or objects.
- Note the strong moral tone; adjust formality accordingly.
- Use with nouns: untrustworthy source, untrustworthy behavior.
- Practice with real-world examples: news, contracts, and promises.
- Watch intonation when using in speech to avoid sounding overly harsh.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What does the word 'untrustworthy' mean?
A.Reliable and trustworthy
B.Not deserving of trust
C.Capable of holding trust
D.Unlikely to betray trust
Step 2: Usage
Choose the correct sentence that uses 'untrustworthy'.
A.He is untrustworthy because he always tells the truth.
B.The weather forecast seems untrustworthy today.
C.She found him to be untrustworthy after he lied to her.
D.I enjoy untrustworthy novels.
Step 3: Similar Words
Which word is most similar to 'untrustworthy'?
A.Reliable
B.Honest
C.Deceitful
D.Faithful
Step 4: Opposite Words
What is the opposite of 'untrustworthy'?
A.Suspicious
B.Unreliable
C.Trustworthy
D.Dishonest
Step 5: Mastery
Can you give an example of a real-life scenario of someone being untrustworthy?
A.The investment scheme turned out to be a scam, revealing the manager's true nature.
B.Michael was always there when I needed him, making him a great friend.
C.Her loyalty to the cause was unquestionable and inspiring.
D.I never thought my colleague would betray our trust.
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