Chloe hoped that her allergies were not going to undermine her ability to perform in the recital.

When engineers came to examine the cracks in the structure of the building, they discovered that years of flooding had worked to undermine the foundation.

I had to cut down the beautiful willow tree because the roots were beginning to undermine the rock wall.

While Abby tried to be friends with the girls in the popular group, her twin brother was always trying to undermine her efforts by embarrassing her and saying dumb things.

Because Tammy always tried to undermine the principal’s authority by taking her complaints to the school board, her contract was not renewed at the end of the year.

Although Marissa was afraid that her mother-in-law’s constant interference could undermine her marriage, she concluded that it was still better to stay in the same town.

During World War II, female broadcasters such as Tokyo Rose were employed by the Japanese to spread propaganda and undermine the morale of Allied troops.

The secret organization sent beautiful women to spy on members of the military and undermine their loyalty.

To undermine her opponent’s confidence, Vanessa started shouting a war whoop every time she served the ball.

If Jake was going to undermine Leslie’s resistance to his charms, he would need to punch up his strategy and include gifts and maybe a love poem or two.