obtuse - Master This Word
Master this word with our 5-step learning method – Learn English in English
obtuse Word Meanings
- not sharp or pointed; blunt
- lacking quickness of perception; slow to understand
- dull in intellect or feeling
obtuse Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
obtuse Phonetic & Pronunciation
UK
/ɒbˈtjuːs/
US
/ɑbˈtus/
obtuse Word Etymology
Root decomposition: ob- (against) + tus (to be deaf). Historical origin: Latin (obtusus) → Old French (obtus) → English. Memory image: Imagine a dull knife that is unable to slice through things, symbolizing someone who struggles to understand or grasp ideas.
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
Obtuse describes something not sharp or pointed, like a blade with a dull edge. It also characterizes people who are slow to grasp ideas or who fail to notice clear implications. In everyday speech it can come across as harsh or judgmental, so it’s usually reserved for situations where a quick mistake or stubbornness seems evident. In formal writing you might opt for 'blunt' for physical dullness or 'slow-witted' for a person’s mental slowness, but be mindful of tone. The word contrasts with acute, keen, or perceptive, and nuance matters when judging someone’s understanding.
Usage Reminders
- Use obtuse for dull physical edges or for someone slow to understand.
- It can sting, so reserve for careful, formal contexts.
- Contrast with acute to show the opposite meaning.
- Pair with nouns: 'an obtuse blade', 'an obtuse remark'.
- Avoid using with people in casual settings; choose gentler phrases when possible.
Common Misconceptions
- It's only about intelligence; obtuse means stupid, not just slow.
- It always refers to people, never things.
- Obtuse and blunt are interchangeable in all contexts.
- Using 'obtuse' means you think someone is morally deficient.
- It describes a momentary confusion, not a persistent trait.
Thinking Differences
In English, obtuse covers both physical dullness and slow understanding; learners often confuse it with 'stupid' and overgeneralize to all misunderstandings. In some contexts it's pejorative; many prefer 'slow to understand' over 'obtuse' in professional writing.
Learning Tips
- Identify both senses: physical dullness and mental slowness.
- Practice polite alternatives for professional writing.
- Use contrast with 'acute' to sharpen understanding.
- Pair with nouns to clarify meaning (blade vs remark).
- Be mindful of tone; avoid implying moral judgment.
- Check context: physical vs metaphorical use can change meaning.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What does the word 'obtuse' mean?
A.Intellectually slow or lacking in perception
B.Slightly sharp
C.Very sensitive
D.Brilliant and smart
Step 2: Usage
Choose the correct usage of the word 'obtuse' in a sentence.
A.His obtuse demeanor made it hard for others to communicate with him.
B.I found his joke to be quite obtuse and funny.
C.She was feeling obtuse about the situation and made a quick decision.
D.The angle is obtuse, measuring more than 90 degrees.
Step 3: Similar Words
Which word is most similar to 'obtuse'?
A.Quick
B.Sharp
C.Dull
D.Bright
Step 4: Opposite Words
What is the opposite of 'obtuse'?
A.Smart
B.Dull-witted
C.Slow
D.Confused
Step 5: Mastery
Can you think of a real-life context that relates to being obtuse?
A.An artist who creates thought-provoking pieces.
B.A person who quickly understands a difficult idea.
C.A student who struggles to grasp complex mathematical concepts.
D.A teacher who explains lessons clearly to everyone.
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