词根词缀：caus-

【来源及含义】Latin: cause, reason, purpose; judicial process, lawsuit

【同源单词】accusable, accusably, Accusare nemo se debet, accusation, accusative, accusatively

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