the GNU version of the Collaborative International Dictionary of English
n. Lack of probity; lack of integrity or rectitude; dishonesty.
The Century Dictionary and Cyclopedia
n. Lack of probity; want of integrity or rectitude of principle; dishonesty.
Word Usage
"It had a peculiar sensitivity to certain stimuli, and he felt a sensation in its roots whenever he encountered prevarication, deception, or any degree of improbity."