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1. Convulsively hearty; uproarious. Used of laughter.
2. Causing convulsive laughter; extremely funny: a sidesplitting comedy.

side′split′ter n.
side′split′ting·ly adv.


(ˈsaɪdˌsplɪt ər)

something that is uproariously funny.
side′split`ting, adj.
side′split`ting•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sidesplitter - a joke that seems extremely funnysidesplitter - a joke that seems extremely funny  
gag, jape, jest, joke, laugh - a humorous anecdote or remark intended to provoke laughter; "he told a very funny joke"; "he knows a million gags"; "thanks for the laugh"; "he laughed unpleasantly at his own jest"; "even a schoolboy's jape is supposed to have some ascertainable point"
References in periodicals archive ?
But what should have been a sidesplitter of a night out for the fans turned out not to be so funny.
In the middle of a rather melancholy recollection, Smith throws in a sidesplitter about his friend Glen, who had three dogs all named after Judy Garland's children.
Another sidesplitter from the Albert Square crew in a week which also saw the best subtle gag of the year as the Slater sisters walked into the Vic just as Who Let The Dogs Out?
The finalists were chosen from a field of 25 nominated moments--five in each of the five categories: Best Risky Business Moment, Best Sidesplitter Moment, Best Oops