1. Making something invalid or no longer valid; nullifying or weakening the validity of something
The court ruled that the contract was invalidating the previous agreement.
O tribunal decidiu que o contrato estava invalidando o acordo anterior.
2. Dismissing or rejecting someone's feelings, experiences, or perspectives as unimportant or unworthy
He felt his mother was invalidating his emotions by telling him not to be upset.
Ele sentiu que sua mãe estava invalidando suas emoções ao dizer-lhe para não ficar triste.
3. Proving that something is not valid or is based on false assumptions
The new evidence is invalidating their entire theory.
A nova evidência está invalidando toda a sua teoria.