(countable) A piece of knowledge that is hidden and intended to be kept hidden
Mr Cashman, I hold you in great esteem, but all of this happened quietly and secretly, with a complete lack of transparency. Das Ganze - lieber Herr Kollege Cashman, bei aller Wertschätzung - geschah heimlich, still und leise, total intransparent.
done or made in silence; implied, but not expressed; silent
Neighbouring South Africa claims to be applying tacit diplomacy, but it is so tacit that it is not even being heard in Zimbabwe. Das benachbarte Südafrika behauptet, auf stille Diplomatie zu setzen, die jedoch so still ist, dass sie in Simbabwe nicht einmal gehört wird.