1. To speak or recite in a loud, rhetorical, or dramatic manner
The actor declaimed Shakespeare's soliloquy with great passion.
O ator declamou o solilóquio de Shakespeare com grande paixão.
2. To speak against someone or something; to protest or inveigh
He declaimed against the injustices of the system.
Ele protestou veementemente contra as injustiças do sistema.
3. To recite from memory in a formal manner
Students were asked to declaim poems in front of the class.
Os alunos foram solicitados a declamar poemas diante da classe.