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