Because I felt somewhat guilty, that was why.

For the first time, he looked somewhat guilty.

With a somewhat guilty conscience we told our fellow prisoners about this "Russian-style" funeral.

She felt somewhat guilty, because he had gotten splatted while doing them a favor.

Feeling somewhat guilty, they'd promised to take them out later for pizza and a movie.

"Sorry," Kirk said, feeling somewhat guilty about the oversight.

I felt somewhat guilty to be so amused but couldn't help myself.

You could make the argument that they were somewhat guilty.

Kaoru was feeling somewhat uncomfortable and somewhat guilty as well.

Feeling somewhat guilty, Helen nevertheless leads him on by being one big maybe.