Define vs Specify

When to use each in English, with meaning, register, and examples.

Define

Top 1,000 (very common)B1verb

Specify

Top 2,000 (common)B2verb
Most common: Define
 DefineSpecify
Pronunciation🇬🇧 /["/dɪˈfaɪn/","/dɪˈfaɪnz/","/dɪˈfaɪnd/","/dɪˈfaɪnɪŋ/"]/🇺🇸 /["/dɪˈfaɪn/","/dɪˈfaɪnz/","/dɪˈfaɪnd/","/dɪˈfaɪnɪŋ/"]/🇬🇧 /["/ˈspesɪfaɪ/","/ˈspesɪfaɪz/","/ˈspesɪfaɪd/","/ˈspesɪfaɪɪŋ/"]/🇺🇸 /["/ˈspesɪfaɪ/","/ˈspesɪfaɪz/","/ˈspesɪfaɪd/","/ˈspesɪfaɪɪŋ/"]/
MeaningTo explain the meaning of a word or idea.To say exactly what you mean.
ExampleCan you define the term 'photosynthesis' for us?Remember to specify your size when ordering clothes.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB1B2
Part of speechverbverb
Collocationsaccurately, carefully, correctly, be difficult to, be impossible to, be easy to, as, by, in terms of, accurately, carefully, correctly, be difficult to, be impossible to, be easy to, as, by, in terms ofclearly, fully, carefully, allow somebody to, require somebody to, be difficult to
Antonymsconfuse, misinterpretvague, generalize
Common mistakesConfused with 'defy' which means to resist or challenge., Using 'define' without an object, e.g., saying 'define' alone., Incorrectly spelled as 'defin' or 'defene'.Using 'specification' instead of 'specify'., Confusing 'specify' with 'identify'., Omitting the object when using 'specify'.
Usage notesUse 'define' when you want to explain something clearly. It's suitable for academic and casual contexts, but avoid using it in very informal settings.Use 'specify' when you want to give detailed information. It's appropriate in both spoken and written contexts, especially in formal situations. Avoid in very casual conversations.

Frequently asked questions: Define vs Specify

What's the difference between Define and Specify?

Define: To explain the meaning of a word or idea. Specify: To say exactly what you mean.

Which is more common: Define and Specify?

Define is the most common in everyday English.

Which is more advanced: Define and Specify?

Specify is the highest level, at B2, on the CEFR scale.

Are Define and Specify the same CEFR level?

Define: B1, Specify: B2 on the CEFR scale.

What part of speech are Define and Specify?

Define: verb, Specify: verb.

Can you show an example of each?

Define: Can you define the term 'photosynthesis' for us? Specify: Remember to specify your size when ordering clothes.

Can I use Define and Specify interchangeably?

Not always. Define and Specify 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.

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