simple past tense and past participle of base
"After the storm stripped the leaves from every tree, the branches looked completely bare based on their skeletal appearance against the grey sky."
Being derived from (usually followed by on or upon).
"The new policy is based on years of research into student behavior."
In plain English: To base something means to make it depend on or be supported by a specific person, thing, or idea.
"The new movie is based on a true story."
Usage: Use "based" as the past tense or past participle of the verb "base" to describe establishing something on a foundation, such as basing your argument on facts. Do not confuse this with the slang adjective "based," which describes someone or something as cool or principled.
having a base of operations (often used as a combining form)
"a locally based business"
"an Atlanta-based company"
"carrier-based planes"
Founded on; having a basis; often used in combining forms.
"She is completely based in her own skin and refuses to change her unique fashion sense just because the crowd prefers something more conventional."
Not caring what others think about one's personality, style, or behavior; focused on maintaining individuality.
In plain English: Based means cool, authentic, and not trying too hard to impress others.
"The movie was based on a true story."
Usage: In modern slang, calling someone "based" means they are cool and authentic because they act according to their own values without worrying about approval from others. Use this term to praise individuals who demonstrate strong integrity by staying true to themselves regardless of social pressure.
The word based is a modern compound formed by combining the adjective base with the suffix -ed to create its current slang meaning. It was first used in this context around 2016 as an internet shorthand for describing someone or something that is authentic and unpretentious.