Although accused of theft, he remains unconvicted due to lack of sufficient evidence.

unconvicted 是由前缀 un-（表示"否定"）和动词 convict（"定罪"）的过去分词 convicted 组合而成。unconvicted 字面意思是"未被定罪的"，指在法律上尚未被正式判定有罪的状态。