Definition of untrained
1 : not trained : such asa : not made adept or expert by instruction or experience <an untrained journalist> <untrained in the use of firearms>b : not taught by discipline to conform to certain behaviors <an untrained dog>
2 : not based on training or knowledge : inexpert <an untrained diagnosis> <To the untrained eye, many wetlands can be deceiving, particularly during drier times of year. — Kathleen Rude>
First Known Use of untrained
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