词根词缀：infra-, infero-, infer-

【来源及含义】Latin: under, below, beneath

【同源单词】anteroinferior, inferior, inferiority, inferiorly, infernal, infernally

词根词缀：-ior

【来源及含义】Latin: a suffix; pertaining to

【同源单词】anterior, excelsior, inferior, posterior, superior