The company found that the manager misappropriated public funds to buy personal property.

misappropriated 是动词 misappropriate 的过去式形式。misappropriate 由前缀 mis-（表示"错误地"）和动词 appropriate（挪用、占用）组成，意思是"非法挪用、盗用（资金等）"。misappropriated 表示"被非法挪用的"。