ab initio

Definition of "ab initio"
  1. A Latin term in law indicating something was legal or in effect from the very beginning
How to use "ab initio" in a sentence
  1. Their marriage was void ab initio, meaning it was invalid from the start.
  2. The contract was considered valid ab initio, thus was enforceable since its inception.
  3. The lease was held invalid ab initio because it was not signed by both parties from the start.

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