词根词缀：dis-, di-, dif-

【来源及含义】Latin: separation, apart, asunder; removal, away, from; negation, deprivation, undoing, reversal, utterly, completely; in different directions

【相关描述】The meaning of dis- varies with different words; dif-, assimilated form of dis- before f; di-, form of dis- before b, d, g, l, m, n, r, and v.

【同源单词】diffect, differ, difference, different, differentia, differential

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