tacitvsTacitusWhat's the difference?

Quick tell: tacit is a adjective, Tacitus is a name, so they fill different roles in a sentence.

Which to use

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

#31,370
“tacit” frequency rank
#45,114
“Tacitus” frequency rank
76484
confusion score

Side-by-Side Comparison

Feature tacit Tacitus
Definition Implied, but not made explicit, especially through silence. A Roman cognomen, notably borne by Publius (or Gaius) Cornelius Tacitus (c.56–117), a historian of ancient Rome and Marcus Claudius Tacitus (c.200–275), a Roman emperor.

Where the spellings diverge

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

5 ch
tacit
7 ch
Tacitus

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: tacit is /ˈtæsɪt/ while Tacitus is /ˈtæsɪtʊs/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “tacit” sits inside “Tacitus”, and the parts of speech differ too (adjective vs name), which is usually the fastest check. Our composite confusion score for this pair is 76484, 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/. Tacitus is at rank #45,114, tagged as aname, pronounced /ˈtæsɪtʊs/.

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 76484, this pair ranks #29,982 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of tacit vs Tacitus

Shared letters: acit. Private to "tacit": -. Private to "Tacitus": su.

"tacit" · 5 letters · shape CVCVC  ·  "Tacitus" · 7 letters · shape CVCVCVC

Known mistypes of this pair

  • tacitatcit · taccit · tacitt · tacti · taict · tcait · ttacit
  • Tacitusatcitus · taccitus · tacitsu · tacittus · tacituss · taciuts · tactius · taictus

Frequency comparison

tacit#31,370
Tacitus#45,114

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "tacit" and "Tacitus" be used interchangeably?
No - they are not even the same part of speech. "tacit" is an adjective and "Tacitus" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "tacit" or "Tacitus"?
"tacit" is the more common of the two: it sits at frequency rank #31,370 in our English list, against #45,114 for "Tacitus". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering tacit vs Tacitus

The fastest way to pick the right one every time.

  • Check the role first: if you need an adjective, it's “tacit”; for a name, it's “Tacitus”.
  • 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