“agrep” for Android Terminal? How can I do this (agrep) in the Android Terminal?

This program allows elastic text searching, which means that searchqwery would match searchquery, and searching Android would also match Anfroid or Androis.

How can I install it so that it can be run from the Android Terminal?
As commented by @Izzy, Termux has a wide repository of Linux packages, but agrep isn't among them so far. So you have to go for compiling the binary from source, or you may give this one a try. It's a static binary for aarch64 architecture.