Translation of "Creeping" in Japanese

People are now steadily creeping into wild spaces,

人口が13億人を超えた今 人間社会は自然の領域を侵し

The more I felt this hypocrisy creeping up inside me.

私の中に偽善がじわじわと 広がるのを感じます

And experts say this creeping killer may be aggressive, but it does not regard humans as prey.

専門家は この凶暴な虫も 人を襲う気はないと言います

- I'm getting a spare tire around my waist. I guess it's middle age creeping up on me.
- Recently, I've been putting on a little weight around my waist. I guess it's middle-age spread.
- My waist size has recently increased. I guess it's middle-age spread.

最近、お腹の周りに肉がついてきたみたい。中年太りかな。