The word disfrazaste is the preterite form of disfrazar in the second person singular. There are other translations for this conjugation.
See the full disfrazar conjugation

disfrazar

¿Te disfrazaste de sirena el año pasado en Halloween?
Did you go as a mermaid for Halloween last year?
¿Por qué te disfrazaste de Elton John?
Why did you come as Elton John?
Sabes que, ya sé de que te disfrazaste.
You know what, I just figured out what your costume is.
¿De qué te disfrazaste este año?
What did you go as this year?
¿Por qué te disfrazaste así?
Why are you dressed up like that? Like what?
Y tú, lo disfrazaste con la cara de Nathan, y le abracé.
And you, you dressed him up in Nathan's face, and I hugged him.
Kelly, ¿de qué te disfrazaste?
Kelly, what are you going as?
Te disfrazaste de la mujer que robó 15 años de tu vida.
You played dress-up right down the road from the woman who stole 15 years of your life.
¿Por qué te disfrazaste?
Why are you dressed like that?
¿Por qué no te disfrazaste?
Why aren't you in disguise?
¿Y de quién te disfrazaste tú?
And who are you supposed to be?
Te disfrazaste de mí.
You're dressed like me.
De qué te disfrazaste este año?
What did you go as this year?
Quiero que te sientas culpable por las veces que me disfrazaste.
Blah, blah, blah. I want to make you guilty for the times you dressed me up.
¿De qué te disfrazaste?
What kind of costume is that?
¿De que te disfrazaste?
What have you come as?
Has pasado mucho tiempo intentando atraer su atención, es decir, incluso te disfrazaste de la Mujer Maravilla...
You spent so much time trying to get his attention. I mean, you dressed up as Wonder Woman.
De que te disfrazaste?
What did you go as?
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