defeat

verb1 of 2

to win against someone in something such as a fight or game

• “The forward of his command should learn to admit defeats.”Tatoeba
• “Computer-generated sentences defeat the purpose of a linguistic corpus.”Tatoeba

Sentences from Tatoeba show real usage. A word can have several meanings, so a sentence may use another one.

noun2 of 2

Frustration (by prevention of success), stymieing; nullification.