exponentialvsexponentiallyWhat's the difference?

Quick tell: exponential is a adjective, exponentially is an adverb, so they fill different roles in a sentence.

Which to use

“exponential” is an adjective and “exponentially” is an adverb - they look or sound alike but fill different roles in a sentence.

#18,820
“exponential” frequency rank
#19,591
“exponentially” frequency rank
38411
confusion score

Side-by-Side Comparison

Feature exponential exponentially
Definition Relating to an exponent. In an exponential manner.

Where the spellings diverge

Shared letters are muted; the letters that actually set exponential and exponentially apart are highlighted. They share 11 letters in sequence, which is exactly why the eye skips the difference.

11 ch
exponential
13 ch
exponentially

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: exponential is /ˌɛk.spəˈnɛn.t͡ʃəl/ while exponentially is /ɛkspə(ʊ)ˈnɛnʃəli/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “exponential” sits inside “exponentially”, and the parts of speech differ too (adjective vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 38411, derived from the frequency rank of both members and their visual similarity.

exponential is recorded at frequency rank #18,820, classified as anadj, pronounced /ˌɛk.spəˈnɛn.t͡ʃəl/. exponentially is at rank #19,591, tagged as anadv, pronounced /ɛkspə(ʊ)ˈnɛnʃəli/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 38411, this pair ranks #286,141 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of exponential vs exponentially

Shared letters: aeilnoptx. Private to "exponential": -. Private to "exponentially": y.

"exponential" · 11 letters · shape VCCVCVCCVVC  ·  "exponentially" · 13 letters · shape VCCVCVCCVVCCV

Known mistypes of this pair

  • exponentialepxonential · exopnential · expnoential · expoenntial · exponenital · exponenntial · exponentail · exponentiall
  • exponentiallyepxonentially · exopnentially · expnoentially · expoenntially · exponenitally · exponenntially · exponentailly · exponentiallyy

Frequency comparison

exponential#18,820
exponentially#19,591

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "exponential" and "exponentially" be used interchangeably?
No - they are not even the same part of speech. "exponential" is an adjective and "exponentially" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "exponential" or "exponentially"?
"exponential" is the more common of the two: it sits at frequency rank #18,820 in our English list, against #19,591 for "exponentially". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering exponential vs exponentially

The fastest way to pick the right one every time.

  • Check the role first: if you need an adjective, it's “exponential”; for an adverb, it's “exponentially”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “exponential” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list