Simple past tense and past participle of familiarise.(verb)
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Use "familiarised" in a sentence
"When my son started school, one of the first things all the new students were familiarised with were the five principles or ‘keys’ which the school functions by."
"When Helen posted the headline ‘Cis man murders woman’ recently it * was* surprising, because it de-familiarised the usual power imbalances that journalists just unthinkingly reify."
"Of course, the poem could simply be a depiction of a wild, moonlit night, and all the horrors could be natural phenomena, de-familiarised."