Use 'sail through' to express someone did something very easily, often because they were well-prepared or very skilled. After studying for a week, he sailed through his driving test.
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Colloquial Success
Primarily a casual expression, appropriate for everyday conversation or informal writing. She sailed through the recipe steps, surprising everyone with her cooking.
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Not Literal
While the verb 'sail' implies movement, 'sail through' figuratively means succeeding easily in this context. Even with all the distractions, he sailed through the workday.