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In
linguistics Linguistics is the scientific study of human language. It is called a scientific study because it entails a comprehensive, systematic, objective, and precise analysis of all aspects of language, particularly its nature and structure. Ling ...
, a distributive numeral, or distributive number word, is a word that answers "how many times each?" or "how many at a time?", such as ''singly'' or ''doubly''. They are contrasted with multipliers. In English, this
part of speech In grammar, a part of speech or part-of-speech (abbreviated as POS or PoS, also known as word class or grammatical category) is a category of words (or, more generally, of lexical items) that have similar grammatical properties. Words that are as ...
is rarely used and much less recognized than cardinal numbers and ordinal numbers, but it is clearly distinguished and commonly used in Latin and several Romance languages, such as Romanian.


English

In English distinct distributive numerals exist, such as ''singly'', ''doubly'', and ''triply'', and are derived from the corresponding multiplier (of Latin origin, via French) by suffixing ''-y'' (reduction of Middle English ''-lely'' > ''-ly''). However, this is more commonly expressed periphrastically, such as "one by one", "two by two"; "one at a time", "two at a time"; "one of each", "two of each"; "in twos", "in threes"; or using a counter word as in "in groups of two" or "two pieces to a ...". Examples include "Please get off the bus one by one so no one falls.", "She jumped up the steps two at a time.", "Students worked in the lab in twos and threes.", "Students worked in groups of two and three.", and "Students worked two people to a team." The suffixes ''-some'' (as in ''twosome'', ''threesome'') and ''-fold'' (as in ''two-fold'', ''three-fold'') are also used, though also relatively infrequently. For musical groups ''solo'', ''duo'', ''trio'', ''quartet'', etc. are commonly used, and ''pair'' is used for a group of two. A conspicuous use of distributive numbers is in
arity Arity () is the number of arguments or operands taken by a function, operation or relation in logic, mathematics, and computer science. In mathematics, arity may also be named ''rank'', but this word can have many other meanings in mathematics. ...
or
adicity Arity () is the number of arguments or operands taken by a function, operation or relation in logic, mathematics, and computer science. In mathematics, arity may also be named ''rank'', but this word can have many other meanings in mathematic ...
, to indicate how many parameters a function takes. Most commonly this uses Latin distributive numbers and ''-ary'', as in ''unary'', ''binary'', ''ternary'', but sometimes Greek numbers are used instead, with ''-adic'', as in ''monadic'', ''dyadic'', ''triadic''.


Other languages

Georgian, Latin, and Romanian are notable languages with distributive numerals; see Romanian distributive numbers. An example of this difference can be seen with the distributive number for 'one hundred'. While the cardinal number is 'centum', the distributive form is "centēnī,-ae, a". In
Japanese numerals The Japanese numerals are the number names used in Japanese. In writing, they are the same as the Chinese numerals, and large numbers follow the Chinese style of grouping by 10,000. Two pronunciations are used: the Sino-Japanese (on'yomi) readi ...
, distributive forms are formed regularly from a cardinal number, a counter word, and the suffix , as in {{Nihongo, , 一人ずつ, hitori-zutsu, one person at a time, one person each. In
Bisayan languages The Bisayan languages or Visayan languages are a subgroup of the Austronesian languages spoken in the Philippines. They are most closely related to Tagalog and the Bikol languages, all of which are part of the Central Philippine languages. Mo ...
, notably Cebuano, Hiligaynon, and Waray, distributive numbers are formed by adding the prefix ''tag-'' on the cardinal number, as in ''tagpito'' (seven of each) and ''tag-upat'' (four of each). In Cebuano, some distributive forms undergo metathesis or syncope, such as ''tagsa'' (from ''tag-usa''), ''tagurha'' (from ''tagduha''), ''tagutlo'' (from ''tagtulo''), and ''tagilma'' (from ''taglima''). In Turkish, one of the -ar/-er
suffix In linguistics, a suffix is an affix which is placed after the stem of a word. Common examples are case endings, which indicate the grammatical case of nouns, adjectives, and verb endings, which form the conjugation of verbs. Suffixes can carr ...
es (chosen according to
vowel harmony In phonology, vowel harmony is an assimilatory process in which the vowels of a given domain – typically a phonological word – have to be members of the same natural class (thus "in harmony"). Vowel harmony is typically long distance, me ...
) is added to the end of a cardinal numeral, as in "bir''er''" (one of each) and "dokuz''ar''" (nine of each). If the numeral ends with a vowel, a letter ş comes to the middle; as in "iki''şer''" (two of each) and "altı''şar''" (six of each).


See also

*
Cardinal number In mathematics, cardinal numbers, or cardinals for short, are a generalization of the natural numbers used to measure the cardinality (size) of sets. The cardinality of a finite set is a natural number: the number of elements in the set. ...
*
Ordinal number In set theory, an ordinal number, or ordinal, is a generalization of ordinal numerals (first, second, th, etc.) aimed to extend enumeration to infinite sets. A finite set can be enumerated by successively labeling each element with the leas ...


Reference

* Gil, David. 2013
Distributive numerals
In: Dryer, Matthew S. & Haspelmath, Martin (eds.) The World Atlas of Language Structures Online. Leipzig: Max Planck Institute for Evolutionary Anthropology. Accessed on 2019-07-23. Numerals