brittle

American  

[brit-l] / ˈbrɪt l /

adjective

brittler, brittlest

1. having hardness and rigidity but little tensile strength; breaking readily with a comparatively smooth fracture, as glass.

   Synonyms:

   fragile

2. easily damaged or destroyed; fragile; frail.

   a brittle marriage.

3. lacking warmth, sensitivity, or compassion; aloof; self-centered.

   a self-possessed, cool, and rather brittle person.

4. having a sharp, tense quality.

   a brittle tone of voice.

5. unstable or impermanent; evanescent.

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noun

1. a confection of melted sugar, usually with nuts, brittle when cooled.

   peanut brittle.

verb (used without object)

brittled, brittling

1. to be or become brittle; crumble.

brittle British  

/ ˈbrɪtəl /

adjective

1. easily cracked, snapped, or broken; fragile

2. curt or irritable

   a brittle reply

3. hard or sharp in quality

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noun

1. a crunchy sweet made with treacle and nuts

   peanut brittle

brittle Scientific  

/ brĭt′l /

1. Having a tendency to break when subject to high stress. Brittle materials have undergone very little strain when they reach their elastic limit, and tend to break at that limit.

2. Compare ductile

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Related Words

See frail ¹.

Other Word Forms

• brittlely adverb
• brittleness noun
• unbrittle adjective
• unbrittleness noun

Etymology

Origin of brittle

First recorded in 1350–1400; Middle English britel, equivalent to brit- (akin to Old English brysten “fragment”) + -el adjective suffix

Example Sentences

The old revolutionary story has grown brittle, feeble.

From The Wall Street Journal • Mar. 26, 2026

Confidence in the software sector is brittle and AI fears are dominating investor sentiment.

From Barron's • Feb. 24, 2026

We move in a familiar loop: outrage at dysfunction, ritualized critique, then a quiet hope that the same brittle systems will somehow stabilize themselves when the stakes get high.

From Salon • Jan. 24, 2026

However, Conservative peer Lord Shinkwin, who has rare brittle bone disease osteogenesis imperfecta, argued that peers had already "been generous with our time".

From BBC • Jan. 8, 2026

Every now and then a brittle piece of paper would flake off, and we’d all gasp.

From "Insignificant Events in the Life of a Cactus" by Dusti Bowling