Base: form, make, or develop (something, such as an opinion, decision)

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Xavier da Silva

Senior Member
Hello everyone,

The verb "to base" means according to Merriam-Webster: to form, make, or develop (something, such as an opinion, decision, or calculation) by using (something, such as information) as a basis, starting point, etc. My question: does "base" sound natural/correct in the examples I made below?

a. John: That guy is a criminal. I know that. I'll report him to the police. Mary: You're saying he's a criminal. But based on what?
b. John: That guy is a criminal. I know that. I'll report him to the police. Mary: You're saying he's a criminal. But what are you basing yourself on?

Thank you in advance!
 
  • Copyright

    Senior Member
    American English
    (a) is all right. (b) is not – you're not basing yourself on anything; you're basing your opinion or belief on something.
     
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