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obtuse

adjective

Simple meaning

Larger than one, and smaller than two right angles, or more than 90° and less than 180°.

Pronunciation

Say it like this:

ahbtoos

Say the bold part a little louder.

US device voice
IPA pronunciation (US)

ɑbˈtus

This word is pronounced essentially the same in American and British English, so one transcription covers both.

IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.

Word Review

Definition

Everyday modern meanings first, grouped by part of speech.

adjective

  1. geometryspecificallyof an angle

    Larger than one, and smaller than two right angles, or more than 90° and less than 180°.

  2. Intellectually dull or dim-witted.

  3. botanyzoology

    Blunt, or rounded at the extremity.

  4. Of sound, etc.: deadened, muffled, muted.

  5. Indirect or circuitous.

Word at a Glance

Difficulty
C2 · Proficient (estimated)
Frequency
Rare

Word Aura™

How this word commonly comes across.

Aura for this meaning

This meaning: Blunt, or rounded at the extremity.

Used this way, obtuse is a reasonably familiar word that can pull warm or cold depending on the sentence. It comes across as direct, sometimes bluntly so.

Emotional tone
Mixed
Formality
Neutral
Intensity
Gentle
How common
Moderately common
Connotation
Direct, sometimes tactless
Usage feel
Blunt and forceful

Usage note

The same wording can read approvingly or critically, so the surrounding sentence has to make the intent clear.

Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.

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Common Patterns and Combinations

How this word naturally appears with others.

Blunt

obtuse pointobtuse apex

Larger

less obtuse

Angle

obtuse angle

Other combinations

obtuse trianglerather obtuseobtuse meaning

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Word Family

Related forms, grouped by how they connect.

Compound terms

Established multiword terms.

  • obtuse-angled trianglenounCompound term

    A triangle that contains an obtuse interior angle.

  • obtuse trianglenounCompound term

    A triangle that contains an obtuse interior angle.

  • obtuse leafnounCompound term

    A simple leaf having a rounded or blunt tip.

  • obtuse anglenounCompound term

    An angle between 90 and 180 degrees.

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Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.