To talk someone into something by persuading or deceiving them with words; to cajole or smooth-talk (often with a negative nuance of tricking or explaining away unpleasant facts).
彼は店員をうまく言いくるめて、割引してもらった。
He skillfully talked the clerk into giving him a discount.
子どもを言いくるめて宿題をやらせたが、すぐにばれてしまった。
He persuaded the child to do the homework (by coaxing), but it was quickly found out.
彼は不都合な証拠を言いくるめてごまかそうとした。
He tried to talk his way out of the inconvenient evidence.