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adj

obtuse

uhb-TYOOS

Obtuse (adj) means Slow to understand or notice things that seem obvious to others. Example: “He was being deliberately obtuse, pretending not to see the point.”

adj
1
Slow to understand or notice things that seem obvious to others.
"He was being deliberately obtuse, pretending not to see the point."
2
Of an angle: greater than 90 degrees but less than 180 degrees.
"The roof formed an obtuse angle where the two slopes met."
3
Blunt or rounded rather than sharp or pointed.
"The leaf has an obtuse tip rather than a pointed one."

How to use obtuse

Learner’s notes

In plain EnglishEither mentally slow to catch on, or (in geometry/shape) blunt rather than sharp.

Common mistake

Don't confuse with "abstruse" (hard to understand) — "obtuse" describes a person's dullness, "abstruse" describes difficult subject matter.

Easily confused with
Common pairings
obtuse angle wilfully obtuse obtuse remark

Word forms

obtuser comparative, more obtuse comparative, obtused past tense, obtuses singular, obtusest superlative, most obtuse superlative

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Fill the gap

Can you complete this real example?

He was being deliberately _____, pretending not to see the point.

Etymology

From Latin obtusus, "blunt, dull", past participle of obtundere, "to beat against, blunt" — from ob- plus tundere, "to strike".

Origin: Latin

obtuse-angled blunt dull

Antonyms

bright intelligent on the ball quick off the mark quick-witted sharp smart clear

Related words

Rhymes for obtuse

See all rhymes for obtuse →

Frequently asked questions

What does “obtuse” mean?

The word “obtuse” means slow to understand or notice things that seem obvious to others. In plain terms, either mentally slow to catch on, or (in geometry/shape) blunt rather than sharp.

How do you pronounce “obtuse”?

“Obtuse” is pronounced uhb-TYOOS (/əbˈt(j)us/ in IPA).

How do you use “obtuse” in a sentence?

Here is “obtuse” used in a sentence: “He was being deliberately obtuse, pretending not to see the point.”

What is another word for “obtuse”?

Words with a similar meaning to “obtuse” include obtuse-angled, blunt and dull.

What is the opposite of “obtuse”?

The opposite of “obtuse” — its antonyms — are bright, intelligent, on the ball, quick off the mark and quick-witted.

What part of speech is “obtuse”?

“Obtuse” is an adjective.

Where does the word “obtuse” come from?

The word “obtuse” comes from Latin. From Latin obtusus, "blunt, dull", past participle of obtundere, "to beat against, blunt" — from ob- plus tundere, "to strike".

How many meanings does “obtuse” have?

“Obtuse” has 3 distinct senses listed in this dictionary. The most common is: slow to understand or notice things that seem obvious to others.

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Definitions: FreeDict original editorial