B1verbworkscience
US/beɪs/
UK/beɪs/
to use particular facts or ideas as the starting point for something; also to have your main office somewhere
More often (noun): the lowest part of something, which supports it
In context
The film is based on a true story from the 1970s.
The company is based in Da Nang but has offices in Hanoi too.
Doctors should base their decisions on clear scientific evidence.
Words that go with base
verb + preposition
- based onusing something as the starting pointThe film is based on a true story.
- based inhaving your main office or home in a placeOur company is based in Ho Chi Minh City.
- base a decision onuse certain facts to decide somethingYou should base a decision on facts, not feelings.
adverb + verb
- loosely basedusing something as a starting point but changing a lotThe series is loosely based on the author's childhood.
- largely basedmostly depending on somethingHer opinion is largely based on what she read online.
Common mistakes
Incorrect:
This company bases in Hanoi.Correct: This company is based in Hanoi.
Incorrect:
The film is based in a true story.Correct: The film is based on a true story.