let's shake on it

let's shake on it

Let us grasp each other's hand as a sign that we both agree to or on something, such as a deal or arrangement. A: "I'll give you $5,000 for your car." B: "Deal. Let's shake on it." Let's shake on it for now, and I'll draw up a formal contract when I'm back in Detroit.
See also: on, shake
Farlex Dictionary of Idioms.

Let's shake on it.

Let us mark this agreement by shaking hands on it. Bob: Do you agree? Mary: I agree. Let's shake on it. Bob: Okay. Bill: Good idea. Sounds fine. Bob (extending his hand): Okay, let's shake on it. Bill (shaking hands with Bob): Great!
See also: on, shake
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • drop (someone or something) on (someone or something)
  • drop on
  • have a clue
  • not have a clue
  • grope after
  • grope after (someone or something)
  • grope at
  • grope at (someone or something)
  • be across (something)
  • be across something