led up to; leading up to; leads up to
Definition of lead up to
1 : to occur in the time that comes before (something) Many voters were still undecided in the days leading up to the election.
2 : to come before and help to cause (something) There was a series of errors leading up to the accident.
3 : to come before and help to introduce (something) a chapter leading up to the main topic of the book I had no idea what he was leading up to when he started talking about his father.
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