| altricial | (adjective) (of hatchlings) naked and blind and dependent on parents for food | - |
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| altruism | (noun) the quality of unselfish concern for the welfare of others | Synonyms: selflessness |
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| altruist | (noun) someone who makes charitable donations intended to increase human well-being | Synonyms: philanthropist |
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| altruistic | (adjective) showing unselfish concern for the welfare of others | Synonyms: selfless |
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| altruistically | (adverb) in an altruistic manner | Synonyms: selflessly |
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| caltrop | (noun) tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed | Synonyms: devil's weed, Tribulus terestris |
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| (noun) Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America | Synonyms: Centauria calcitrapa, star-thistle |
| (noun) a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits | Synonyms: water chestnut, water chestnut plant |
| maltreat | (verb) treat badly | Synonyms: abuse, ill-treat, ill-use, mistreat, step |
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| maltreated | (adjective) subjected to cruel treatment | Synonyms: abused, ill-treated, mistreated |
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| maltreater | (noun) someone who abuses | Synonyms: abuser |
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| maltreatment | (noun) cruel or inhumane treatment | Synonyms: abuse, ill-treatment, ill-usage |
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| naltrexone | (noun) an oral antagonist against the action of opiates | - |
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| paltriness | (noun) worthlessness due to insignificance | Synonyms: sorriness |
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| paltry | (adjective) contemptibly small in amount | Synonyms: measly, miserable |
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| (adjective) not worth considering | Synonyms: negligible, trifling |