to beg or plead in tears; to implore someone tearfully or cling to someone while crying.
子どもがおねだりして母親に泣き付いた。
The child begged tearfully to his mother.
借金の返済を待ってほしいと彼は社長に泣き付いた。
He tearfully begged the company president to postpone repaying the debt.
彼女は許しを求めて泣き付いたが、相手は冷たかった。
She pleaded for forgiveness in tears, but the other person was cold.