delay
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delay
A delay or lateness, especially in the fields of technology, transportation, or events. The word is an Anglicism.
Wegen technischer Probleme hatte unser Flug einen Delay von zwei Stunden.
Because of technical problems, our flight had a delay of two hours.
'Delay' is a word from English and is used in German mainly in specific contexts such as air travel, technology, or music. The pronunciation is based on English.
Unser Zug hatte leider einen erheblichen Delay.
Unfortunately, our train had a significant delay.
The context makes the meaning clear: if people are talking about travel, appointments, or technology, a delay is meant. In the context of music or audio engineering, it refers to the echo effect.
Wegen eines Delays bei der Datenübertragung lädt die Seite langsam.
Because of a delay in data transmission, the page loads slowly.
In the sense of 'Verspätung' (delay/lateness), 'Delay' is often used with the verb 'haben' (to have) or in the phrase 'es gibt einen Delay' (there is a delay).
Wir hatten auf dem Hinflug einen Delay von drei Stunden.
We had a three-hour delay on the outbound flight.
echo
'das Echo' and 'der Delay' can both have to do with a repeated sound. An echo is the natural or general reverberation you hear when sound comes back, for example in the mountains or in an empty room. 'Delay' is used mainly in technology and music. It is an effect that delays and repeats an audio signal. Learners may confuse the words because a delay sounds like an echo. If you are talking about a natural listening experience, 'Echo' is correct. If you are talking about music technology or an effects device, 'Delay' fits better.
Der Musiker stellt den Delay so ein, dass die Gitarre räumlicher klingt.
The musician adjusts the delay so that the guitar sounds more spacious.
In der Höhle rief Tom laut, und das Echo kam mehrmals zurück.
In the cave, Tom called out loudly, and the echo came back several times.