illicite

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
ILLICITE. Unlawfully. 
     2. This word has a technical meaning, and is requisite in an indictment 
where the act charged is unlawful; as, in the case of a riot. 2 Hawk. P. C. 
25, Sec. 96. 
    

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