exponentially

American  

[ek-spoh-nen-shuh-lee, ‐spuh‐] / ˌɛk spoʊˈnɛn ʃə li, ‐spə‐ /

adverb

1. at a steady, rapid rate.

   The cost of a college education has increased exponentially over the last 30 years.

2. Mathematics. at a continuous rate of growth or decay that can be calculated using the constant e, according to the rules of raising e to the power of a positive or negative exponent.

   Any population growing exponentially must, sooner or later, encounter shortages of resources.

   The measurable rate at which a radioactive nuclide’s atoms decay exponentially is the basis of radiometric dating.

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Other Word Forms

• nonexponentially
  adverb

Etymology

Origin of exponentially

exponential ( def. ) + -ly

Explanation

Use exponentially when you want to say that something's increasing quickly by large amounts. Your friends and colleagues will be pleased to hear that your vocabulary is growing exponentially. The root of exponentially is the French verb exponere, meaning “to put out.” Think of a factory that puts out so many products its creations seem to increase exponentially. The mathematical origin of this word has to do with multiplying a number by itself so think also of rabbits, who are known for multiplying exponentially. Now imagine if rabbits worked in a factory... (No animals were harmed during this explanation).

Example Sentences

See Examples For:

exponentially

Panettiere’s star rose exponentially, however, in 2006 when she debuted as indestructible Texas cheerleader Claire Bennet in “Heroes,” which quickly became a massive hit for its network NBC.

From The Wall Street Journal ● Aug. 17, 2026

As someone who has been in the industry for more than 40 years, Jack feels it would have been unimaginable 20, 30 years ago and that the city has gone "exponentially upwards".

From BBC ● Aug. 16, 2026

For every actor, musician, writer and artist who has become a wealthy and enduring celebrity, exponentially more of them have enjoyed a brief, shining moment, never to be heard of again.

From Los Angeles Times ● Aug. 14, 2026

French supermarket chain Carrefour’s Spanish unit said demand for eclipse glasses has "grown exponentially", increasing twentyfold in recent days compared with the same period last month.

From Barron's ● Aug. 11, 2026

No new tagged pictures of hijabless me, but the comments have grown exponentially.

From "Saints and Misfits" by S.K. Ali