secretly

Very little was said by either; Kitty was too much afraid of him to talk; Elizabeth was secretly forming a desperate resolution; and, perhaps, he might be doing the same.

As for Elizabeth herself, this invitation was so far from exciting in her the same feelings as in her mother and Lydia, that she considered it as the death-warrant of all possibility of common sense for the latter; and detestable as such a step must make her, were it known, she could not help secretly advising her father not to let her go.

I deceived everybody, therefore, yourself included, and I came down secretly when I was supposed to be in London.

This person, a sailor, of turbulent character, and whom I suspected of Bonapartism, has been secretly to the Island of Elba.