base

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Base

base is on the Basic English 850 List.

band - base - basin

base is one of the 1000 most common headwords.

bar - base - basis

Noun

Base is on the Academic Vocabulary List.

Something's base is its lower part; the solid part that touches the floor or touches the earth and keeps the other parts of the thing up.
- Synonym: foundation
Something's base is its most important part.
A base is a building for military personnel and material.
(chemistry); (countable) An base is a chemical that releases hydroxide ions in water, and has a high pH.
- Synonym: alkaline
- Antonym: acid
Ammonia is a weak base.

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Positive
base

Rude, unfair, or unkind.
- Synonym: immoral
The people who make those sex videos are really base.

Plain form
base

Third-person singular
bases

Past tense
based

Past participle
based

Present participle
basing

Base is on the Academic Vocabulary List.

(transitive) When something or someone is based in a place, they do most of their work in that place.
The airline is based in Toronto, but flies all over the world.
(transitive) If you base x on y, you build or make x on, using, or to be like y.
The movie is based on the book.