1. What does DD stand for?

Designated driver

An acronym that stands for the person who must stay sober during the alcohol-drinking fun times in order to provide a sober, safe drive home; often the most responsible person in the group of friends.


"Dane, u r the dd for the work party tonite.
Just like every other nite, right?"

Related Slang


Last Updated: August 20, 2014

2. What does DD mean when discussing stocks?

Due diligence

When you're discussing stocks or other investments, DD stands for "due diligence." Financial advisors, finance forum posters, and investment-related websites often tell investors to perform their own DD before buying in to any company.

What, exactly, DD involves is up for debate (see the Reddit example pictured below). However, doing your due diligence on a company and its stock typically includes:

  • Investigating the company's balance sheet, cash flow, and management
  • Comparing the company with its competitors
  • Assessing the company's strengths and weaknesses
  • Considering industry and worldwide trends that may affect the company
  • Examining the company's short- and long-term growth

Only after you've completed all these tasks (and potentially, a few others) have you performed your due diligence.


"The number one rule of investing: Before buying any stock, do your DD."
When discussing stocks, DD means "due diligence"

When discussing stocks, DD means "due diligence"

Related Slang


Last Updated: February 11, 2021

3. What does DD stand for?

Dear daughter

A loving way to refer to a daughter; used on social media sites and online parenting forums; see also DS.


"My dd said the sweetest thing to me today!"

Related Slang


Last Updated: August 1, 2013

DD definition

This page explains what the acronym "DD" means. The various definitions, examples, and related terms listed above have been written and compiled by the Slangit team.

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