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"Acaso" is an adverb which is often translated as "perhaps", and "a lo mejor" is a phrase which is often translated as "maybe". Learn more about the difference between "acaso" and "a lo mejor" below.
acaso(
ah
-
kah
-
soh
)
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. perhaps
Acaso en la próxima reunión podamos tratar ese tema.Perhaps we can discuss the topic in the next meeting.
a.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
¿Acaso no te acuerdas que te toca pagar?I guess you've forgotten it's your turn to pay, have you?
¿Acaso no es la guerra la industria más poderosa?Isn't war the most powerful industry?
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a lo mejor(
ah
 
loh
 
meh
-
hohr
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. maybe
A lo mejor me puedo quedar con mi amiga cuando visite Chicago.Maybe I can stay with my friend when I visit Chicago.
b. perhaps
¿Vas a venir esta noche? - A lo mejor.Are you coming tonight? - Perhaps.
c. may
Si hablas con la maestra, a lo mejor te dejará entregar la tarea tarde.If you speak to the teacher, she may let you hand in your homework late.
d. might
A lo mejor se quedan en casa porque tienen que cuidar a los niños.They might stay at home because they have to watch the kids.
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