tacit

[tas-it]
adjective
  1. understood without being openly expressed; implied: tacit approval.
  2. silent; saying nothing: a tacit partner.
  3. 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 formstac·it·ly, adverbtac·it·ness, noun

Synonyms for tacit

Antonyms for tacit

1. expressed.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for tacitness

tacit

adjective
  1. implied or inferred without direct expression; understooda tacit agreement
  2. created or having effect by operation of law, rather than by being directly expressed
Derived Formstacitly, adverbtacitness, noun

Word Origin for tacit

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

Word Origin and History for tacitness

tacit

n.

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