Adhere vs Obey

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

Adhere

FormalTop 3,000 (common)C1verb

Obey

Top 1,000 (very common)B2verb
Most formal: AdhereMost common: Obey
 AdhereObey
Pronunciation🇬🇧 /["/ədˈhɪə(r)/","/ədˈhɪəz/","/ədˈhɪəd/","/ədˈhɪərɪŋ/"]/🇺🇸 /["/ədˈhɪr/","/ədˈhɪrz/","/ədˈhɪrd/","/ədˈhɪrɪŋ/"]/🇬🇧 /["/əˈbeɪ/","/əˈbeɪz/","/əˈbeɪd/","/əˈbeɪɪŋ/"]/🇺🇸 /["/əˈbeɪ/","/əˈbeɪz/","/əˈbeɪd/","/əˈbeɪɪŋ/"]/
MeaningTo stick to something or follow it closely.To do what someone tells you to do.
ExampleOnce in the bloodstream, the bacteria adhere to the surface of the red cells.In order to maintain order, everyone must obey the rules.
RegisterFormalNeutral
How commonTop 3,000 (common)Top 1,000 (very common)
CEFR levelC1B2
Part of speechverbverb
Collocationsclosely, firmly, rigidly, toimmediately, instantly, quickly, have to, must, refuse to, be only obeying orders, a duty to obey, an obligation to obey
Antonymsdetach, separate, disobeydisobey, ignore
Common mistakesConfused with 'adhere to' vs 'stick to' — they are not interchangeable., Using 'adhere' without a clear object — it needs to specify what is being adhered to., Assuming 'adhere' can only refer to physical sticking — it can also refer to following rules.Confused with 'obeyed' in past tense usage., Using 'obey' without an object, which is incorrect., Mixing up 'obey' with 'comply' - they are similar but not interchangeable.
Usage notesUsed in formal contexts, often in legal or technical language. It's appropriate when discussing rules, guidelines, or sticky substances, but less common in casual conversation.Use 'obey' in contexts involving rules, laws, or authority figures. It's suitable for both formal and casual situations, but avoid using it with someone you know well unless discussing serious issues.

Frequently asked questions: Adhere vs Obey

What's the difference between Adhere and Obey?

Adhere: To stick to something or follow it closely. Obey: To do what someone tells you to do.

Which is more formal: Adhere and Obey?

Adhere is the most formal of these.

Which is more common: Adhere and Obey?

Obey is the most common in everyday English.

Are Adhere and Obey the same CEFR level?

Adhere: C1, Obey: B2 on the CEFR scale.

Can I use Adhere and Obey interchangeably?

Not always. Adhere and Obey 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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