词根词缀：fid-, fidel-

【来源及含义】Latin: believe, belief; trust, faith, true

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "faith, trust; faithful, trusting; believe, belief": cred-; dox-.

【同源单词】Ab origine fidelis, Ad finem fidelis, Adeste, affiance, affiance, affiant

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