| ARDUOUSNESSES | • arduousnesses n. Plural of arduousness. • ARDUOUSNESS n. the state of being arduous.
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| BLUNDERBUSSES | • blunderbusses n. Plural of blunderbuss. • BLUNDERBUSS n. an old-fashioned gun.
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| CREDULOUSNESS | • credulousness n. The characteristic or state of being credulous; credulity. • CREDULOUSNESS n. the state of being credulous.
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| DECIDUOUSNESS | • deciduousness n. The state or condition of being deciduous; the quality of trees which lose their leaves in winter or the dry season. • DECIDUOUSNESS n. the state of being deciduous.
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| DESULFURISERS | • DESULFURISER n. a device for removing sulfur, also DESULFURIZER. | 
| DESULPHURISES | • desulphurises v. Third-person singular simple present indicative form of desulphurise. • DESULPHURISE v. to remove the sulphur from a compound, also DESULFURISE, DESULFURIZE, DESULPHURIZE.
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| DUBIOUSNESSES | • dubiousnesses n. Plural of dubiousness. • DUBIOUSNESS n. the state of being dubious.
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| DUTEOUSNESSES | • DUTEOUSNESS n. the state of being duteous. | 
| DUTIFULNESSES | • dutifulnesses n. Plural of dutifulness. • DUTIFULNESS n. the state of being dutiful.
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| HUMDRUMNESSES | • HUMDRUMNESS n. the state of being humdrum. | 
| MURDEROUSNESS | • murderousness n. The state or condition of being murderous. • MURDEROUS n. inclined to murder.
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| PENDULOUSNESS | • pendulousness n. The state or quality of being pendulous. • PENDULOUSNESS n. the state of being pendulous.
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| SUBDUEDNESSES | • SUBDUEDNESS n. the state of being subdued. | 
| UNPRESSURISED | • unpressurised adj. Alternative form of unpressurized. • UNPRESSURISED adj. not pressurised, also UNPRESSURIZED.
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| UNSENSUALISED | • unsensualised v. Simple past tense and past participle of unsensualise. • UNSENSUALISE v. to free from the dominion of the senses, also UNSENSUALIZE.
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| UNSOUNDNESSES | • unsoundnesses n. Plural of unsoundness. • UNSOUNDNESS n. the state of being unsound.
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