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

The judge wrote that Oscar Mayer's disciplinary case was based on its perception that Mr Davies may have perceived that the auditor looked "typically Irish".

Read more on BBC

These numbers are based on limited readings from the main show courts, and other factors do come into play.

Read more on BBC

That company was SciSports, which composed a report highlighting five suitable clubs based on factors including playing style, manager and competition for places, while taking into account Depay wanting more freedom in attacking moments.

Read more on BBC

O’Keefe attorney Lindsay Lewis said in a Wednesday statement that the writer’s legal team “commends the Court for reaching the only just and correct result based on the law — a complete dismissal of the case.”

Read more on Los Angeles Times

He touted the studio’s “balanced” slate with big blockbusters, films based on established intellectual property, horror movies and original works.

Read more on Los Angeles Times