How do I get Siri to call Amy instead of Aimee?
If both people are in your Contacts, you can give one, or both, a nickname.  When using Siri, you can refer to the person by nickname and Siri will know who you're talking about. 

To add a nickname to a person:


Open the Contacts app
Tap the contact you want to view, then tap Edit
Scroll down and tap add field -&gt; Nickname
Add a nickname and tap Done


To remove a nickname, just reverse the steps.  You can change the nickname at any time.

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