rapidly vs rigidly, What's the Difference?

Which to use

“rapidly” and “rigidly” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#4,042
“rapidly” frequency rank: #40,420
“rigidly” frequency rank: 44462
confusion score

Side-by-Side Comparison

Feature	rapidly	rigidly
Definition	With speed; in a rapid manner.	In a rigid manner; stiffly.

Where the spellings diverge

Shared letters are muted; the letters that actually set rapidly and rigidly apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.

7 ch

rapidly

7 ch

rigidly

Spelling & Dictionary Insight

A purely visual mix-up. rapidly (/ˈɹæpɪdli/) and rigidly (/ˈɹɪd͡ʒ.ɪd.li/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 44462, derived from the frequency rank of both members and their visual similarity.

rapidly is recorded at frequency rank #4,042, classified as anadv, pronounced /ˈɹæpɪdli/. rigidly is at rank #40,420, tagged as anadv, pronounced /ˈɹɪd͡ʒ.ɪd.li/.

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 44462, this pair ranks #230,326 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of rapidly vs rigidly

Shared letters: dilry. Private to "rapidly": ap. Private to "rigidly": g.

"rapidly" · 7 letters · shape CVCVCCV · "rigidly" · 7 letters · shape CVCVCCV

Known mistypes of this pair

rapidly ← arpidly · raipdly · rapdily · rapiddly · rapidlly · rapidlyy · rapidyl · rapildy
rigidly ← irgidly · rgiidly · rigdily · riggidly · rigiddly · rigidlly · rigidlyy · rigidyl

Frequency comparison

rapidly#4,042

rigidly#40,420

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "rapidly" and "rigidly" be used interchangeably?

No. They are said differently (/ˈɹæpɪdli/ versus /ˈɹɪd͡ʒ.ɪd.li/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "rapidly" or "rigidly"?

"rapidly" is the more common of the two: it sits at frequency rank #4,042 in our English list, against #40,420 for "rigidly". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering rapidly vs rigidly

The fastest way to pick the right one every time.

Read both glosses above and match the meaning you intend, only context separates this pair.
See each word in full, definition, IPA, etymology and its other confusables. Full “rapidly” entry
Browse more pairs most likely to be confused. Most confusable