衒う[terau] to show off
衒学[gengaku] pedantry
衒気[genki] affectation
衒耀[genyou] false glitter
衒学者[gengakusha] pedant

衒学的[gengakuteki] pedantic
奇を衒う[kiwoterau] to make a display of one's originality (eccentricity)
衒学趣味[gengakushumi] pedantry
女衒[zegen] someone who makes their living selling women into prostitution
衒い[terai] affectation