Past tense of hiccup with double-p spelling; to have made involuntary hiccup sounds and muscle contractions.
An alternative past tense formation of 'hiccup' using the British convention of doubling the final consonant before adding '-ed'.
American English typically uses 'hiccuped' but British English prefers 'hiccupped'—both are correct, showing how different English-speaking countries follow slightly different spelling conventions.
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