Delay vs Latency
When to use each in English, with meaning, register, and examples.
Delay
Top 1,000 (very common)B2noun
Latency
Beyond 10,000 (less common)
Most common: Delay
| Delay | Latency | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/dɪˈleɪ/"]/🇺🇸 /["/dɪˈleɪ/"]/ | 🇬🇧 //ˈleɪtənsɪ//🇺🇸 //ˈleɪtənsi// |
| Meaning | To make something happen later than planned. | The time it takes for something to happen after a request is made. |
| Example | Due to the heavy traffic, there was a significant delay in our arrival time. | The latency in the network caused significant delays during the video conference. |
| Register | Neutral | Neutral |
| How common | Top 1,000 (very common) | Beyond 10,000 (less common) |
| CEFR level | B2 | - |
| Part of speech | noun | |
| Collocations | considerable, enormous, lengthy, series, be subject to, be plagued by, encounter, occur, without delay, delay in, delay of, considerable, enormous, lengthy, series, be subject to, be plagued by, encounter, occur, without delay, delay in, delay of | network latency, high latency, reduce latency, latency issues, low latency |
| Antonyms | advance, hasten, expedite | - |
| Common mistakes | Confusing 'delay' with 'defer' — 'defer' is often more formal., Using 'delayed' incorrectly in tense — check verb forms for accuracy., Overusing 'delay' in casual speech when simpler options like 'wait' are available. | Confused with 'laziness' - learners may mix terms due to phonetic similarity., Using 'latency' as a verb - ‘latency’ is always a noun., Misunderstanding the concept - many think it's just delay without considering its technical context. |
| Usage notes | Use 'delay' when referring to postponing events or actions. It's appropriate in both formal and informal contexts, but avoid using it in very casual conversations where simpler words like 'wait' might suffice. | Commonly used in technology and communications contexts. Avoid in casual conversations unless discussing tech-related topics. |
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Frequently asked questions: Delay vs Latency
What's the difference between Delay and Latency?
Delay: To make something happen later than planned. Latency: The time it takes for something to happen after a request is made.
Which is more common: Delay and Latency?
Delay is the most common in everyday English.
Can you show an example of each?
Delay: Due to the heavy traffic, there was a significant delay in our arrival time. Latency: The latency in the network caused significant delays during the video conference.
Can I use Delay and Latency interchangeably?
Not always. Delay and Latency are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.