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"At once" is a phrase which is often translated as "en seguida", and "immediately" is an adverb which is often translated as "inmediatamente". Learn more about the difference between "at once" and "immediately" below.
at once(
aht
wuhns
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. en seguida
Sir, you're going to be late. We must leave at once.Señor, va a llegar tarde. Debemos irnos en seguida.
b. de inmediato
Sharon, I know you're home. Answer the door at once.Sharon, sé que estás en casa. Abre la puerta de inmediato.
a. a la vez
He was juggling and riding a bike at once.Hacía malabarismos y andaba en bicicleta a la vez.
b. al mismo tiempo
It's difficult to work and watch TV at once.Es difícil trabajar y ver la tele al mismo tiempo.
immediately(
ih
-
mi
-
di
-
uht
-
li
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
a. inmediatamente
The plane will take off immediately after fueling up.El avión despegará inmediatamente después de cargar combustible.
b. de inmediato
Call the doctor immediately if your headaches return.Avísale al médico de inmediato si vuelven los dolores de cabeza.
c. enseguida
I recognized him immediately when he took off his hat.Lo reconocí enseguida cuando se quitó el sombrero.
2. (directly)
a. directamente
Beatriz is not immediately involved, but you do need to get her approval.Beatriz no está involucrada directamente, pero sí tienes que conseguir su aprobación.
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
3. (formal) (the moment that) (United Kingdom)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
Regionalism used in the United Kingdom
a. en cuanto
Immediately after she said it, she wished she had kept quiet.En cuanto lo dijo, deseó haber guardado silencio.
