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"I am selling" is a form of "sell", a transitive verb which is often translated as "vender". Learn more about "sell" below.
sell(
sehl
)A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
a. vender
He tried to sell me some story about a traffic accident and delays.Intentó venderme una historia sobre un accidente de tráfico y un atasco.
c. resultar convincente
I don't sell myself too well at interviews.No resulto muy convincente en las entrevistas.
3. (to betray)
a. vender
Other party members accused him of selling the cause.Otros miembros del partido le acusaron de haber vendido la causa.
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).