> "Tutear" means to use the informal 2nd person singular verb form.
> Is there a verb in Spanish that means to use the "Usted" form?
Not a verb (that I know of), but the phrase "tratar de usted".
"Al señor Pérez lo trato de usted" = "I use the usted form when
talking to señor Pérez"
You can also use the phrase with "tratar de tú". You frequently hear
it when new acquaintances are figuring out which form to use with each
other:
"Oye, trátame de tú"
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