Open up vs They're trying to open his safe

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

Open up

Top 1,000 (very common)

They're trying to open his safe

Beyond 10,000 (less common)
Most common: Open up
 Open upThey're trying to open his safe
Pronunciation🇬🇧 //ˈəʊ.pən ʌp//🇺🇸 //ˈoʊ.pən ʌp//🇬🇧 //ðeəˈraɪɪŋ tə ˈəʊpən hɪs seɪf//🇺🇸 //ðerˈraɪɪŋ tə ˈoʊpən hɪs seɪf//
MeaningTo make something available or to start a conversation.They want to unlock his security box.
ExampleShe decided to open up about her childhood experiences.They're trying to open his safe to retrieve important documents.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Beyond 10,000 (less common)
Collocationsopen up a discussion, open up about feelings, open up access, open up to someone, open up opportunitiesopen a safe, lock a safe, install a safe
Common mistakesConfused with 'open' – 'open up' suggests revealing more than just physically opening something., Using it without an object when it's needed – e.g., say 'open up the discussion' instead of just 'open up'.Confused with 'safe' as in 'free from harm' versus 'safe' as a locked box., Using 'safes' instead of 'safe' when referring to one box.
Usage notesUse 'open up' in casual conversations to refer to sharing feelings or information. It's appropriate in both personal and some professional contexts, but avoid it in very formal situations.Used when referring to gaining access to items kept hidden or secured. Not informal; used in safety or financial contexts.

See it in real clips

Open up
They're trying to open his safe

Frequently asked questions: Open up vs They're trying to open his safe

What's the difference between Open up and They're trying to open his safe?

Open up: To make something available or to start a conversation. They're trying to open his safe: They want to unlock his security box.

Which is more common: Open up and They're trying to open his safe?

Open up is the most common in everyday English.

Can you show an example of each?

Open up: She decided to open up about her childhood experiences. They're trying to open his safe: They're trying to open his safe to retrieve important documents.

Can I use Open up and They're trying to open his safe interchangeably?

Not always. Open up and They're trying to open his safe 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.

Related comparisons