insider inside • insidiosity · · · Info · Definitions · Characters · · insider · · Text Latin · · Script 7 · · Length Definitions · · · (noun) an officer of a corporation or others who have access to private information about the corporation's operations. · · Noun Definition 1 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073