B1
used as the past form of 'will' to talk about what someone was willing to do or what something was able to do
Dictionary examples:
My phone wouldn't stop buzzing, so I put it in the fridge. (0.0)
My alarm clock wouldn't stop ringing, so I threw it out the window. (0.0)
My homework wouldn't do itself, so I taught my dog to write. (0.0)
The car wouldn't start this morning. (18.3)
I asked her to talk to him, but she wouldn't. (18.8)