based

[beyst]

adjective

1. having a specified object or material as its base or foundation or as its primary constituent (often used in combination).

   Our house was one of the three stone-based houses of that era, built by my maternal grandfather.

2. established, grounded, or focused on a specified principle or belief, fact, method, etc. (often used in combination).

   It’s a culturally based phys ed curriculum that uses Indian traditions and values to teach healthy lifestyle habits.

   There are a number of promising evidence-based treatment modalities to address depression.

3. having a specified place as its primary location or headquarters; stationed or situated (often used in combination).

   A centrally based Houston media agency is looking for a Digital Account Manager to help with a key communications client.

   The Chicago-based HIV/AIDS organization provides housing, healthcare, and substance abuse programs for its clients.

4. having a specified origin or source (often used in combination).

   They want to replace animal-based foods with plant-based milks and vegetable protein.

5. Slang.,  true to one’s self or secure in one’s beliefs regardless of what others think, especially when those beliefs fall outside of the mainstream.

   Her presentation was so based—did you see the teacher's expression? Priceless!

interjection

Slang.

1. (used to express approval or respect, especially in response to a social media post).

   Based. At least somebody shows some spine on this forum.

verb

1. the simple past tense and past participle of base.

Other Word Forms

• unbased adjective
• well-based adjective

Word History and Origins

Origin of based¹

First recorded in 1610–20; base ¹ ( def. ) + -ed ² ( def. )

Example Sentences

Children are, on average, nine times more likely than adults to vape, it says, based on available global figures.

From BBC

The plan states that Israel's military will withdraw from Gaza "based on standards, milestones, and timeframes" that must be agreed by all parties.

From BBC

We've based him in an office in Dragon Park, so he's got his own space to watch games - and he watches a lot of games - and analyse the opposition in a very meticulous way.

From BBC

“We’ve got to be more physical with our screening. That doesn’t change based on who’s in the lineup, so that habit, we can build that.”

From Los Angeles Times

"Historically, this kind of cyber crime… has mostly been carried out by Russian-speaking criminals, based in Russia or other parts of the former Soviet Union", he explains.

From BBC