Simple past tense and past participle of outsmart.(verb)
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Use "outsmarted" in a sentence
"It frightens them, as it reminds them of the time they were 'outsmarted' by someone."
"We thus find ourselves "outsmarted" by single-celled organisms and things like viruses that are barely even alive, much less intelligent."
"Yes, Professor, online sources and resources have indeed become the order of the day - wherein quality standards go for a toss, and reference editing expertise gets 'outsmarted'!"