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：spond-, spon-, spons-, -spondence, -spondent,-spondency, -spondencies

【来源及含义】Latin: to bind oneself; to pledge; to promise solemnly; to adopt and support a cause

【同源单词】correspond, correspondence, correspondent, correspondent, correspondently, correspondingly