Americans by contrast are assaulted at every turn by ludicrous portions and fatty, sugary processed concoctions.
Indeed, the idea that this is something people enjoy—that anyone wants to stay idle—is ludicrous.
[It] is ludicrous to make such a risky and unproven view the centerpiece of European science policy.
1610s, "pertaining to play or sport," from Latin ludicrus, from ludicrum "a sport, game, toy, source of amusement, joke," from ludere "to play," which, with Latin ludus "a game, play," perhaps is from Etruscan, or perhaps from PIE root *leid- "to play." Sense of "ridiculous" is attested from 1782. Related: Ludicrously; ludicrousness.