词根：-cred-

【词根含义】：相信,信任

【词根来源】：来源于拉丁语动词credo, credere, credidi, creditus(相信)和名词creditum, crediti, n(借贷)。

【同源单词】：accredit, credentials, credibility, credible, credit

前缀：il-, in-, ir-, im-

【词根含义】：不,无,非;入,向内

【词根来源】：(il-用于l前;im-用于b, m, p前;ir-用于r前;in-用于其它情况)   来源于拉丁语in。

【同源单词】：illegal, illegality, illegitimate, illiterate, illogical

词根词缀：cred-, credit-, creed-

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

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

【同源单词】accredit, accreditation, accredited, accrediting, Carpe diem, concredit

词根词缀：-ulous, -ulously

【来源及含义】Latin: a suffix; tending to do, inclined to; full of

【同源单词】acidulous, bibulous, cavernulous, circumnebulous, credible, credulous