Hardness
Nouns
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hardness etc. adj.
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rigidity
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renitence, renitency
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inflexibility, temper, callosity, durity. induration, petrifaction
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lapidification, lapidescence
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vitrification, ossification
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crystallization. stone, pebble, flint, marble, rock, fossil, crag, crystal, quartz, granite, adamant
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bone, cartilage
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hardware
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heart of oak, block, board, deal board
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iron, steel
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cast iron, decarbonized iron, wrought iron
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nail
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brick, concrete
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cement.
Verbs
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render hard etc. adj.
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harden, stiffen, indurate, petrify, temper, ossify, vitrify
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accrust.
Adjectives
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hard, rigid, stubborn, stiff, firm
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starch, starched
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stark, unbending, unlimber, unyielding
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inflexible, tense
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indurate, indurated
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gritty, proof. adamant, adamantine, adamantean
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concrete, stony, granitic, calculous, lithic, vitreous
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horny, corneous
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bony
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osseous, ossific
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cartilaginous
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hard as a rock etc. n.
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stiff as buckram, stiff as a poker
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stiff as starch, stiff as as board.