Antonyms of adj risible

1 sense of risible

Sense 1
amusing, comic, comical, funny, laughable, mirthful, risible -- (arousing or provoking laughter; "an amusing film with a steady stream of pranks and pratfalls"; "an amusing fellow"; "a comic hat"; "a comical look of surprise"; "funny stories that made everybody laugh"; "a very funny writer"; "it would have been laughable if it hadn't hurt so much"; "a mirthful experience"; "risible courtroom antics")

INDIRECT (VIA humorous) -> humorless, humourless, unhumorous -- (lacking humor; "it was a humorless wink; a wink of warning"- Truman Capote)

Similarity of adj risible

1 sense of risible

Sense 1
amusing, comic, comical, funny, laughable, mirthful, risible -- (arousing or provoking laughter; "an amusing film with a steady stream of pranks and pratfalls"; "an amusing fellow"; "a comic hat"; "a comical look of surprise"; "funny stories that made everybody laugh"; "a very funny writer"; "it would have been laughable if it hadn't hurt so much"; "a mirthful experience"; "risible courtroom antics")
       => humorous (vs. humorless), humourous -- (full of or characterized by humor; "humorous stories"; "humorous cartoons"; "in a humorous vein")