Third-person singular simple present indicative form of undercut.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "undercuts" in a sentence
"The label undercuts our comments and then you get to claim we’re all the same person trying to say bad things your precious C-130J."
"Curiously, what the doctor wrote about Batman and Robin undercuts his main thesis in the book — that reading comics deadened children’s sensitivity to the suffering of others."
"In fact, the Lilliput phrase undercuts the humor of what you've written."