Etymograph

English

tact

Tact comes from French tact ‘sense of touch’, and goes back to Proto-Indo-European *teh₂g-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*teh₂g-1‘to touch’reconstructed
  2. Proto-Italicc. 1500–700 BCE*tangō1‘to touch’reconstructed
  3. Latinc. 75 BCE–200 CEtangō2‘touch’
  4. Latinc. 75 BCE–200 CEtāctus3‘touched’
  5. Frenchc. 1600–presenttact3‘sense of touch’
  6. Englishearliest quotation 1849–1861tact3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin tango
  2. 2 Wiktionary, Latin tactus
  3. 3 Wiktionary, English tact
  4. Earliest quotation in Wiktionary’s entry: 1849–1861, Thomas Babington Macaulay, London: Longman: “He had formed plans not inferior in grandeur and…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*teh₂g-Wiktionary, Latin tango‘to touch’reconstructed
  2. Proto-Italicc. 1500–700 BCE*tangōWiktionary, Latin tango‘to touch’reconstructed
  3. Latinc. 75 BCE–200 CEtangōWiktionary, Latin tactus‘touch’
  4. Latinc. 75 BCE–200 CEtāctusWiktionary, English tact‘touched’
  5. Frenchc. 1600–presenttactWiktionary, English tact‘sense of touch’
  6. Englishearliest quotation 1849–1861tactWiktionary, English tact. Earliest quotation in Wiktionary’s entry: 1849–1861, Thomas Babington Macaulay, London: Longman: “He had formed plans not inferior in grandeur and…”

The story

Borrowed from French tact, following a semantic shift from earlier tact (‘sense of touch; feeling’), borrowed from Latin tāctus (‘touched’). The borrowing was likely influenced by earlier English tact (‘sense of touch; feeling’), which was a parallel borrowing directly from the Latin.

Full etymology on Wiktionary

Linked words

through Proto-Indo-European *teh₂g- ‘to touch’

taste, integrity, integrate, attain, taxis, taxonomy, contagion, contaminate, talon, tama, ataxia, talus, thwack, 31 more

through Proto-Italic *tangō ‘to touch’

intangible, 10 more

through Latin tangō ‘touch’

contingent, tangible, contiguous, tame, tangent, 11 more

Another origin of tact

  1. Latinc. 75 BCE–200 CEtāctus
  2. Englishtodaytact

Directly borrowed from Latin tāctus.

Today it means

noun Sensitive mental touch; special skill or faculty; keen perception or discernment; ready power of appreciating and doing what is required by circumstances; the ability to say the right thing and avoid statements that will give offence or pain even if true.

Sources

Sources: Wiktionary, “tact”; the older steps come from the Wiktionary entries for Latin tango, Latin tactus. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *teh₂g- / tact

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