逐渐地用英语可以说成 gradually。

这个词来源于拉丁语的 gradus 意思是步伐，后来发展为指渐进或逐步发展。

例句：

The plant grew gradually taller and wider. (这株植物逐渐长得更高更宽。)

He gradually became more confident in his speaking abilities. (他逐渐变得在说话方面更自信。)