declinar

Senses

1. 1.

   to decline, to refuse

   to politely turn down an invitation, offer, or request

2. 2.

   to decline, to deteriorate

   to gradually weaken, worsen, or fade (health, power, quality)

3. 3.

   to decline (grammar)

   to inflect a noun, adjective, or pronoun through its cases

4. 4.

   to state, to give (personal information)

   to formally provide one's name, address, or other identifying details

Examples

• "Ela declinou o convite para a festa porque estava muito cansada."

  She declined the invitation to the party because she was very tired.

• "A saúde dele começou a declinar depois dos 80 anos."

  His health began to decline after age 80.

• "O suspeito se recusou a declinar seu nome e endereço."

  The suspect refused to state his name and address.

Usage

Formal register. Common collocations include "declinar um convite/oferta" (decline an invitation/offer), "declinar responsabilidade" (decline responsibility), and "declinar dados pessoais" (provide personal information). The "state personal information" sense is particularly formal/bureaucratic and common in legal or official contexts.