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"Everyday" is an adjective which is often translated as "diario", and "every day" is an adverb which is often translated as "todos los días". Learn more about the difference between "everyday" and "every day" below.
everyday(
eh
-
vri
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dey
)An adjective is a word that describes a noun (e.g., the big dog).
2. (habitual)
every day(
eh
-
vri
dey
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
a. todos los días
You should brush your teeth every day.Hay que cepillarse los dientes todos los días.