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

easily damaged or destroyed; fragile; frail

a brittle marriage.

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

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

having a sharp, tense quality

a brittle tone of voice.

unstable or impermanent; evanescent.

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

peanut brittle.

to be or become brittle; crumble.

adjective

durable , flexible , moveable , resilient , supple , relaxed

adjective

breakable , crisp , crumbling , crumbly , delicate , frail , frangible , friable , inelastic , shatterable , shivery , vitreous , weak , curt , edgy , irritable , nervous , prim , short , stiff , stilted , brash , candy , crispy , crunchy , eager , evanescent , feeble , fickle , fragile , perishable , slight , tenuous , transitory