Any

Any is an English determiner, pronoun, and adverb used to indicate an unspecified amount or quantity. It is not definite and is often used when the exact item or number is unknown or unimportant. In questions, any is used to inquire about existence or availability: "Do you have any sugar?" In negative statements, any often means none: "There isn't any sugar." In affirmative statements, any can express broad or non-specific scope: "You can take any book you want" or "If you have any questions, please ask." The word can also function as a pronoun: "Choose any." and as part of phrases such as "any of them" to refer to one or more among a set.

As a determiner before singular or plural nouns, any takes a nonspecific sense: "Any student" or "Any books on the shelf." It can appear with countable or uncountable nouns depending on context. It is common in conditional phrases: "If you have any problems, contact us." It is also used in comparative or inclusive constructions: "She would accept any offer."

In historical usage, any derives from Old English ænig, related to German einige and Dutch enig; it has long served to indicate non-specific reference.

In formal writing and logic, any is sometimes used in informal contexts in place of more precise quantifiers, though the standard logical quantifiers are universal (for all) and existential (there exists). See also all, every, some.