There is some underhand villainy at work to frighten my sister about her approaching marriage.
I do not wish to employ strong language, but I do consider it underhand.
But the existence of this secret, underhand affection would avail her naught unless it could be ripened into acts.
And he recalled his own bootless wickedness and underhand intrigues.
The Mountain justly charged them with having attempted to save the King by underhand means.
You know I don't want to mix myself up with your underhand dealings.
But I had an instinctive repugnance to proceedings of such an underhand, unlawful character.
Depend upon it, there has been some underhand influence at work.
He, like Miss Tattersall, had been playing an underhand game, though his was different in kind.
If punished, he would continue his misdeeds in an underhand way.