tinha percebido

had noticed

→ ter
phrase Uncommon #18,041
had noticed Also commonly means “had realized,” depending on context. This is the past perfect form of perceber. The examples include related forms such as deveria ter percebido (“should have noticed”), deve ter percebido (“must have noticed”), and tenho percebido (“I have noticed”).
PO: Eu tinha percebido que havia algo errado.
EN: I had noticed that something was wrong.

O Ziri tinha percebido tudo isto.

Ziri had realized all of this.

Eu não tinha percebido.

I hadn't realized.

— “O Morro dos Ventos Uivantes” (2026)

Eu nem sequer tinha percebido.

I hadn’t even noticed.

Mas MRX tinha percebido nosso truque.

But MRX had figured out our trick.

— Invasores - Nenhum Sistema Está à Salvo (2014)

Como eu não tinha percebido antes?

How could I not have noticed before?

— Braço de Diamante (1969)

Ele não tinha percebido o quanto tinha tido medo.

He hadn't realized how scared he had been.