Words from
congenital
    (of a person) having a particular trait from birth or by firmly established habit.
    
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    unrequited
    (of a feeling, especially love) not returned or rewarded.
    
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    rectitude
    morally correct behavior or thinking; righteousness.
    
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    renounce
    reject and stop using or consuming.
    
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    shabby
    in poor condition through long or hard use or lack of care.
    
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    tacit
    understood or implied without being stated.
    
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    inconclusive
    not leading to a firm conclusion; not ending doubt or dispute.
    
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    noncommittal
    (of a person or a person's behavior or manner) not expressing or revealing commitment to a definite opinion or course of action.
    
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    innocuous
    not harmful or offensive.
    
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    pierce
    force or cut a way through.
    
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    supersede
    take the place of (a person or thing previously in authority or use); supplant.
    
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    surreptitiously
    in a way that attempts to avoid notice or attention; secretively.
    
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    furtive
    attempting to avoid notice or attention, typically because of guilt or a belief that discovery would lead to trouble; secretive.
    
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    abet
    encourage or assist (someone) to do something wrong, in particular, to commit a crime or other offense.
    
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    shrewd
    having or showing sharp powers of judgement; astute.
    
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    impervious
    unable to be affected by.
    
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    syllogism
    an instance of a form of reasoning in which a conclusion is drawn (whether validly or not) from two given or assumed propositions (premises), each of which shares a term with the conclusion, and shares a common or middle term not present in the conclusion (e.g., all dogs are animals; all animals have four legs; therefore all dogs have four legs ).
    
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    inexorable
    impossible to stop or prevent.
    
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    inextricable
    impossible to disentangle or separate.
    
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