on demand

Idioms  

1. When needed or asked for, as in She's always ready to sing on demand, or Nowadays infants are generally fed on demand. This usage is a broadening of this phrase's meaning in finance, that is, “payable on being requested or presented,” as in This note is payable on demand. [Late 1600s]

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Example Sentences

See Examples For:

on demand

Amazon wouldn’t share how many autonomous drones are coming to Tracy, saying the number will increase depending on demand.

From Los Angeles Times ● Aug. 29, 2026

House prices have been falling sharply since May as higher interest rates weigh on demand and changes to taxes on investment properties affect investors.

From The Wall Street Journal ● Aug. 28, 2026

Meanwhile, this summer, the industry has dealt with cyclospora and salmonella outbreaks that have weighed on demand.

From MarketWatch ● Aug. 12, 2026

Another said, “You can’t snap your fingers and get a spouse on demand, sadly.”

From Salon ● Aug. 12, 2026

It is almost impossible to tighten the orbicularis oculi, pars orbitalis on demand, and it is equally difficult to stop it from tightening when we smile at something genuinely pleasurable.

From "Blink" by Malcolm Gladwell