base off of
B2 informal separable transitive
In simple words
To create or design something by using another thing as the main idea or starting point.
Literal meaning: To found something off of another thing — the double preposition is informal but common.
Meanings
1 B2 informal
(Informal, non-standard American English) To use something as the foundation, source, or inspiration for something else.
"The script is based off of actual transcripts from the trial."
Grammar: separable
Usage notes
This form (with both 'off' and 'of') is particularly common in casual American English, especially in speech and internet writing. Avoid in formal or academic writing; use 'based on' instead. The double preposition is considered redundant by usage guides.
Commonly used with
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Forms
Base
base off of
I/you/we/they
3rd person
bases off of
he/she/it
Past simple
based off of
yesterday
Past participle
based off of
have + pp
-ing form
basing off of
continuous
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