어원, cid-; cis-= cut pesticide n. 살충제 (cut down the use of pesticides cf. pest) insecticide n. 살충제 (malign effects of insecticides cf. insect) fratricidal a. 동족상잔의 (a fratricidal war *frater-= brother cf. fraternity 남학생 동아리) incision n. 절개 (perform an operation without an incision) suicide n. 자살 (commit suicide *sui-= self) genocide n. 종족말살 (Adolf Hitler's genocide *gen-= class; race cf. genre) c..