词根词缀:-less
【来源及含义】Old English: -leas, from leas, "free from, devoid of, false, feigned"; suffix meaning "lacking"
【同源单词】aimless, artless, avoidless, causeless, ceaseless, charmless
词根词缀:mors-, mord-
【来源及含义】Latin: bite, biting
【同源单词】mordacious, mordacity, mordancy, mordant, mordent, mordicancy