"brittle" in the noun sense
1. brittle, toffee, toffy
caramelized sugar cooled in thin sheets
"brittle" in the adjective sense
1. brittle, brickle, brickly
having little elasticity hence easily cracked or fractured or snapped
"glass is brittle"
"`brickle' and `brickly' are dialectal"
lacking warmth and generosity of spirit
"a brittle and calculating woman"
3. brittle, unannealed
of metal or glass) not annealed and consequently easily cracked or fractured
Source: WordNet® (An amazing lexical database of English)
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