Simple past tense and past participle of mislabel.(verb)
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Use "mislabelled" in a sentence
"Just an observation: The axes are not mislabelled?"
"Future historians sifting through the cinematic detritus of the last 100 years might find themselves wondering whether some dozy assistant had mislabelled the reels for the early 21st century."
"• It wasn't our reviewer's remarkable prescience but a mislabelled preview DVD that led us to run a review of Neighbourhood Watched a week before it is due to be shown on television Last night's TV, 2 March, page 25, G2."