- The definition of ludicrous is something so absurd it's laughable.
An example of ludicrous is the claim that President Obama was born outside of the United States.
Origin of ludicrousClassical Latin ludicrus ; from ludus, a play, game ; from Indo-European base an unverified form leid-, to play, tease from source Classical Greek loidorein, to rail at, rebuke
Origin of ludicrousFrom Latin lūdicrus, sportive, from lūdus, game; see leid- in Indo-European roots.
(comparative more ludicrous, superlative most ludicrous)
First attested in 1619. From Latin lÅ«dicrus, from lÅ«dÅ (“play").