by itself

Meaning

1. Oxford86% of films

   automatically; without anyone doing anything

   It will run its course all by itself. Thank you very much for your concern.

2. Oxford14% of films

   alone

In the movies · 13

• Yeah. The spoon stood up in the soup by itself!Inside Out2015
• The cooling system's rebooting by itself.Mission: Impossible - Rogue Nation2015
• It will run its course all by itself. Thank you very much for your concern.The Green Mile1999
• How is it dead all by itself?War of the Worlds2005
• The condition could have cleared up by itselfThe Others2001
• Plus, have you ever seen a vagina by itself?Superbad2007
• Okay This happened to just pop up there by itselfThe Invisible Man2020
• - Well, not by itself. - Well, no.Transformers2007

Learn it in full scenes

• Inside Out2015
  • Broccoli on the Pizza
  • Sadness Nearly Touches a Core Memory
  • Riley Introduces Herself and Cries

From the same entry

• be patience, honesty, simplicity, itself
• in itself
• to itself

More idioms

• in the meantime
• be in control
• beat about the bush
• to cut a long story short
• the elephant in the room
• keep an eye open
• by themselves
• far from it
• feel good
• be no use
• put your foot down
• sooner or later