Used when someone has the opportunity to start over without past mistakes affecting them. He moved to a new city for a clean slate in his career.
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Emotional Impact
Expresses a hopeful, optimistic mood, often showing forgiveness or moving on. After their argument, they resolved their issues and began with a clean slate.
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Metaphorical Usage
This phrase is figurative and does not refer to an actual slate but to a person's life or situation. The new policy allowed taxpayers to wipe the slate clean and rectify their finances.