词根词缀：frustrat-, frustra-

【来源及含义】Latin: in vain, in error; to deceive, to disappoint

【同源单词】biofraud, defraud, defrauded, defrauder, electoral fraud, fraud

词根词缀：labor-, laborat-

【来源及含义】Latin: work, toil

【相关词根词缀】 Cross references related to "work, toil" word families: argo-; ergasio-; ergo-; oper-; pono-; urg-.

【同源单词】arte et labore, belabor, belabored, belaboring, belabors, Child labor in Guatemala

词根词缀：omni-, omn-

【来源及含义】Latin: all, every

【相关词根词缀】 Related "all, every" word unit: pan-, panto-.

【同源单词】Absque argento omnia vana, Aliquis in omnibus, all, Amor vincit omnia, ante omnia, brychomnivorous

词根词缀：plac-, placi-, -plais

【来源及含义】Latin: to please, to satisfy; peace, peacefulness; calm, calmness

【相关词根词缀】 Cross references directly, or indirectly, involving "calm, calmness, peace, quiet": pac-, peac-; quies-, quiet-; seren-.

【同源单词】complacence, complacent, complacently, complaisance, complaisant, complaisantly