English word ridiculous comes from Latin rideo, and later Latin ridiculus (Laughable, funny, amusing. Silly, absurd, ridiculous.)
rideo (Latin)
(intransitive) I laugh.. (transitive) I laugh at, ridicule, mock.
ridiculus (Latin)
Laughable, funny, amusing. Silly, absurd, ridiculous.
ridiculous (English)
Deserving of ridicule; foolish; absurd.