ridiculous a. 可笑的(rid+ic+ulous多…的→多笑的→可笑的)
ridicule v. 嘲笑(red+ic+ule)
deride v. 嘲笑(de向下+ride→贬低的笑→嘲笑)
derisive a. 嘲笑的;可笑的(de+ris+ive)
risible a. 爱笑的(ris+ible能笑的→爱笑的)
risibility n. 爱笑,能笑(risible+ility)