词根词缀：extra-, extro-, extr-, exter-

【来源及含义】Latin: beyond, outside, on the outside, outward, external

【同源单词】Ab extra, ad extra, ad extremum, exteriorly, external, external reforming

词根词缀：-ist

【来源及含义】Greek > Latin: a suffix; one who believes in; one who is engaged in; someone who does something

【同源单词】abiogenist, abolitionist, abortionist, abrakophile, absolutist, absurdist