to require, want, or have a necessity for something

the desire and ability of consumers to purchase a particular commodity or service

to indicate that nothing else is required except for the action mentioned

needless; no need for

to urgently need; an urgent requirement

to need or require something as a necessity

the total amount or volume of a product or service that consumers are willing and able to purchase.

an item or good that is indispensable for life or a particular purpose

to urgently need or have a pressing necessity for something

each takes what he needs

a possible period of want or need

particular or special requirements, often referring to high-end or specialized services and products

distribution according to need

(economics) rigid demand; inelastic demand (short for [[刚性需求|剛性需求|gang1 xing4 xu1 qiu2]])

(environmental science) chemical oxygen demand; COD

fundamental requirements or necessities for survival or basic living

external demand (demand for a country's goods and services from foreign markets)

necessary or needed for a specific purpose

on demand; according to demand

publishing on demand

biochemical oxygen demand (BOD)

basic necessities of life

The total amount of goods and services demanded within a society or economy at a given time.

Maslow's hierarchy of needs in psychology

Necessity is the mother of invention (European proverb).