how ever—is used as a more emphatic variant of “how”:
- Everything is fabulous—how ever are you going to choose?
however—
1. in whatever manner or way:
- However you calculate the costs, we need your estimate by tomorrow afternoon.
2. to whatever degree:
- However hard he tries to balance his responsibilities, Piech is always going to be left open to accusations of double dealing.
3. yet; nonetheless:
- Tom went on a date with a really nice girl. However, he forgot to take his credit card with him…