ambos

both

“Ambas opciones son buenas para mí.” — Both options are fine with me.

Inherited from Latin ambōs m pl. Old Spanish consistently had amos, representing the inherited form, while ambos existed in neighbouring Old Leonese. Later, Latin influence helped ambos spread into Spanish as well, where it displaced the form without /b/.

both

Inherited from Latin ambōs m pl. Old Spanish consistently had amos, representing the inherited form, while ambos existed in neighbouring Old Leonese. Later, Latin influence helped ambos spread into Spanish as well, where it displaced the form without /b/.