Words from
surreptitious
    kept secret, esp. because it would not be approved of.
    
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    ubiquitous
    present, appearing, or found everywhere.
    
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    motive
    a reason for doing something, esp. one that is hidden or not obvious.
    
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    qualification
    a statement or assertion that makes another less absolute.
    
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    arcane
    understood by few; mysterious or secret.
    
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    sensible
    (of a statement or course of action) chosen in accordance with wisdom or prudence; likely to be of benefit.
    
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    attest
    declare that something exists or is the case.
    
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    predilection
    a preference or special liking for something; a bias in favor of something.
    
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    replete
    filled or well-supplied with something.
    
    Source: My old website