de ‧ feat ‧ ist /dɪˈfiːtəst, dɪˈfiːtɪst/ BrE AmE noun [countable]
[ Word Family: noun : ↑ defeat , ↑ defeatism , ↑ defeatist ; adjective : ↑ defeatist , ↑ defeated ≠ UNDEFEATED ; verb : ↑ defeat ]
someone who believes that they will not succeed
—defeatist adjective :
a defeatist attitude
—defeatism noun [uncountable]