tacitvstacitlyWhat's the difference?

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

Which to use

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

#31,370
“tacit” frequency rank
#42,441
“tacitly” frequency rank
73811
confusion score

Side-by-Side Comparison

Feature tacit tacitly
Definition Implied, but not made explicit, especially through silence. In a tacit manner; done in silence or implied.

Where the spellings diverge

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

5 ch
tacit
7 ch
tacitly

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: tacit is anadjective and tacitlyanadverb. On the page they differ by 2 extra letter(s) - “tacit” sits inside “tacitly”. Our composite confusion score for this pair is 73811, derived from the frequency rank of both members and their visual similarity.

tacit is recorded at frequency rank #31,370, classified as anadj, pronounced /ˈtæsɪt/. tacitly is at rank #42,441, tagged as anadv.

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 73811, this pair ranks #38,350 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of tacit vs tacitly

Shared letters: acit. Private to "tacit": -. Private to "tacitly": ly.

"tacit" · 5 letters · shape CVCVC  ·  "tacitly" · 7 letters · shape CVCVCCV

Known mistypes of this pair

  • tacitatcit · taccit · tacitt · tacti · taict · tcait · ttacit
  • tacitlyatcitly · taccitly · tacilty · tacitlly · tacitlyy · tacittly · tacityl · tactily

Frequency comparison

tacit#31,370
tacitly#42,441

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "tacit" and "tacitly" be used interchangeably?
No - they are not even the same part of speech. "tacit" is an adjective and "tacitly" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "tacit" or "tacitly"?
"tacit" is the more common of the two: it sits at frequency rank #31,370 in our English list, against #42,441 for "tacitly". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering tacit vs tacitly

The fastest way to pick the right one every time.

  • Check the role first: if you need an adjective, it's “tacit”; for an adverb, it's “tacitly”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “tacit” 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