vs 

QUICK ANSWER
"Mi mejor amiga" is a phrase which is often translated as "my best friend", and "anteayer" is an adverb which is often translated as "the day before yesterday". Learn more about the difference between "mi mejor amiga" and "anteayer" below.
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. my best friend
Mi mejor amiga se fue a vivir a China hace varios años, pero nos mantenemos en contacto.My best friend went to live in China several years ago, but we have kept in touch.
b. my best buddy
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
(colloquial)
Regionalism used in the United States
(United States)
Marga, que era mi mejor amiga, y yo hicimos verdaderas locuras en los años de colegio.Marga, who was my best buddy, and I did some really crazy things during our school years.
c. my best mate
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
(colloquial)
Regionalism used in the United Kingdom
(United Kingdom)
Al concierto voy con mi mejor amiga y su chico.I'm going to the concert with my best mate and her boyfriend.
d. my best pal
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
(colloquial)
Mi mejor amiga se llama Fahima y es de Pakistán.My best pal's name is Fahima, and she's from Pakistan.
Copyright © 2025 Dictionary Media Group, Inc.
anteayer(
ahn
-
teh
-
ah
-
yehr
)
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. the day before yesterday
Mi cumpleaños fue anteayer.My birthday was the day before yesterday.
Copyright © 2025 Dictionary Media Group, Inc.