Flunk
Definition 1 of 2
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Negative Outcome
Flunk denotes achieving below the required standard, often in academic settings. After flunking chemistry, he had to repeat the course.
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Informal Usage
Flunk is informal and might be inappropriate in formal educational writings or announcements. The professor would not say you flunked, but rather that you did not pass.
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Stricter Context
'Flunk out' implies failing to the point of having to leave the course or school. His constant partying led him to flunk out of college.