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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 ?
My sidesplitter that he performed a rendition of: holding up a phone cord without a receiver and calling the device "the phoneless cord.
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?