not know the first thing about

Meaning

1. 1

   not know the first thing about sb / sth

   to know nothing at all about sb / sth

2. 2

   not know, etc. the first thing about sth / sb

   to know nothing at all about sth / sb

In the movies · 1

• It's strange that a man can live with a woman for 10 years and not know the first thing about her.The Letter1940
• You don't know the first thing about being a father.Ant-Man2015
• You don't know the first thing about me, pal.Joker2019
• Guy probably doesn't know the first thing about building a ra...Trolls World Tour2020
• Yeah, they didn't know the first thing about string theory.Whatever Works2009
• You don't know the first thing about vinyl, and I am certainly not from Darien.The Perfect Date2019
• You don't know the first thing about what I'm going through right now.Horns2013
• Bruno doesn t know the first thing about taking care of these dogs 19946881The Conjuring: The Devil Made Me Do It2021

Learn it in full scenes

• The Letter1940
  • Leslie Confesses After the Shooting
  • Leslie Recounts the Night Hammond Died
  • Leslie Describes Shooting Hammond
• Whatever Works2009
  • Boris Breaks the Fourth Wall
  • Boris Panics and Jumps Out the Window
  • Boris Takes Melodie In

From the same entry

• before you know where you are
• be not to know
• for all you, I, they, know
• God knows
• I don't know how, why, etc.
• I know
• know as well as I do
• know backwards
• know best
• know better
• know by sight
• know different

More idioms

• not take kindly to
• one thing leads to another
• poke your nose into
• push to the back of your mind
• shut the door in face
• take a back seat
• the icing on the cake
• the lesser of two evils
• to put it mildly
• up to a point
• wet behind the ears
• what's up with that