The sudden withdrawal of funds from the joint account caused a dispute.

withdrawal 是动词 withdraw 的名词形式，由 withdraw（撤回、提取）加上名词后缀 -al 构成。withdraw 本身由前缀 with-（表示"向后"或"离开"）和动词 draw（拉、取）组成。 withdrawal 在这里指"提取、撤回资金"的行为，特别是指从银行账户中取出钱款。