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[tas-it] /ˈtæs ɪt/
understood without being openly expressed; implied:
tacit approval.
silent; saying nothing:
a tacit partner.
unvoiced or unspoken:
a tacit prayer.
Origin of tacit
1595-1605; < Latin tacitus silent, past participle of tacēre to be silent (cognate with Gothic thahan; akin to Old Norse thegja)
Related forms
tacitly, adverb
tacitness, noun
1. unexpressed, unspoken, unsaid, implicit.
1. expressed. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for tacitly
Contemporary Examples
Historical Examples
  • There is nothing of novelty to them in this tacitly shared sense of gloom.

    In the Valley Harold Frederic
  • It was as if they had tacitly agreed to take their different provinces.

    Little Dorrit Charles Dickens
  • In the southern district this division is tacitly agreed upon.

    The Forest Stewart Edward White
  • A woman that does not make a noise after an attempt of that kind has tacitly condoned the offence.

    Victory Joseph Conrad
  • They two had tacitly agreed not to be bound by common sense,—not to be wise.

    Is He Popenjoy?

    Anthony Trollope
British Dictionary definitions for tacitly


implied or inferred without direct expression; understood: a tacit agreement
created or having effect by operation of law, rather than by being directly expressed
Derived Forms
tacitly, adverb
tacitness, noun
Word Origin
C17: from Latin tacitus, past participle of tacēre to be silent
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for tacitly



c.1600, from French tacite, from Latin tacitus "that is passed over in silence, done without words, assumed, silent," prop. past participle of tacere "to be silent," from PIE root *tak- "to be silent" (cf. Gothic þahan, Old Norse þegja "to be silent," Old Norse þagna "to grow dumb," Old Saxon thagian, Old High German dagen "to be silent"). The musical instruction tacet is the 3rd person present singular of the Latin verb.

Online Etymology Dictionary, © 2010 Douglas Harper
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