Ir*ris"i*ble (?), a. [Pref. ir- not + risible. See Irrision.] Not
risible. [R.]
Ir*ri"sion (?), n. [L. irrisio, fr. irridere, irrisum, to laugh at;
pref. ir- in + ridere to laugh: cf. F. irrision.] The act of laughing
at another; derision.
This being spoken scepticè, or by way of irrision.
Chapman.