Risible...

Chew on this (adapted from WordSmith.org's A.Word.A.Day newsletter):

risible, adjective

1. laughable; ludicrous
2. disposed to laugh
3. relating to laughter

From Latin risus, past participle of ridere (to laugh). Other words that share the same root are ridiculous, deride, rident, and riant.

Remember Ris Low? Coincidence in the choice of name? You decide...