falsehood：错误的想法或说法；虚假；说谎；不实之词；谎言

例句：She stared, but soon comprehending why I counselled her to utter the falsehood, she assured me she would not complain. 

句意：她愣住了，可是马上就明白我为什么劝她说假话，她向我保证她不会诉苦的。