null
/nʌl/
Học thuậtThân thiện
Definition
Adjective:
- Having no legal or binding force; invalid: "null" describes something that has no legal effect or validity.
- Amounting to nothing; nil or zero: In technical contexts, "null" can mean having a value of zero or constituting nothing.
- Without character or expression; insignificant: It can describe something lacking distinctive qualities or value.
Noun:
- A zero value; nothing: "null" can refer to the concept of zero or an empty, valueless quantity.
- A non-existent or negligible amount: It signifies an amount so small it is considered as nothing.
Usage Examples
- Adjective:
- The contract was declared null after the breach. (The agreement was officially stated to be invalid.)
- The result of the equation was null. (The final value calculated was zero.)
- Noun:
- The search returned a null. (The query yielded no results or a zero value.)
- He reduced the complex argument to a null. (He simplified the complicated point until it meant nothing.)
Advanced Usage
- "null and void": A legal phrase meaning completely invalid and without force.
- The judge ruled the old law null and void.
- "null hypothesis": In statistics, a default hypothesis that there is no relationship between two measured phenomena, which one seeks to test and potentially reject.
- The experiment failed to reject the null hypothesis.
- "null set": In mathematics, a set with no elements; an empty set.
- The intersection of those two groups is a null set.
Variants and Related Words
- Nullify (verb): To make legally null and void; to cancel out.
- The new agreement will nullify the old one.
- Nullity (noun): The state of being null, especially in legal terms; something that is null.
- The court confirmed the nullity of the marriage.
Synonyms
- Invalid: Not legally acceptable.
- Void: Completely empty or without legal force.
- Nil: Nothing, zero (often used in scores).
- Zero: The numerical figure 0; nothing.
Related Phrases
- To render null: To cause something to become invalid.
- His actions could render the warranty null.
Adjective
- lacking any legal or binding force
- null and void
Noun
- a quantity of no importance
- it looked like nothing I had ever seen before
- reduced to nil all the work we had done
- we racked up a pathetic goose egg
- it was all for naught
- I didn't hear zilch about it