based

American  

[beyst] / beɪst /

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

Etymology

Origin of based

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

Example Sentences

Her new book, Keep Your Hair On: Understanding Urges to Pick, Pull and Bite, is based on her personal experience and years of research into body-focused repetitive behaviours.

From BBC

It also could put even higher oil and gas prices in play, as well as increased costs for fertilizer, transporting goods and many products based on petrochemicals.

From MarketWatch

Enter the Mortgage Bankers Association, which is lobbying the Administration to let lenders underwrite mortgages based on a single credit report.

From The Wall Street Journal

WSJ | Buy Side: See our guide to the top life insurance companies for older buyers based on our extensive analysis of coverage and costs.

From The Wall Street Journal

Later on Monday, the start-up issued a new report based on its Anthropic Economic Index, an attempt to gauge the economic effects of AI.

From Barron's