whereupon
Whereupon (conj) means Immediately after which; as a result of which. Example: “He apologized, whereupon she finally smiled.”
How to use whereupon
Learner’s notesIn plain EnglishA formal way of saying "after which" or "at which point."
Mostly seen in formal or literary writing to link two events in sequence.
Fill the gap
Can you complete this real example?
He apologized, _____ she finally smiled.
Etymology
From Middle English wherupon, built from "where-" plus "upon."