The phrase "a tacit message" is correct and usable in written English.
It can be used to refer to an unspoken or implied message that is understood without being directly stated.
Example: "The silence in the room conveyed a tacit message of disapproval among the team members."
Alternatives: "an implicit message" or "a subtle message".
It is a tacit message from sport that the colour of my skin is worthy of protection but my sexuality is not".
CARTHAGE, Tunisia — Defense Secretary Leon E. Panetta sent a tacit message to Israeli leaders on Monday, urging that diplomacy and economic pressure be given more time to work before they move ahead with any military strike on Iran.
Moscow's failure to become involved or even to issue a strong statement of criticism toward Israel, Steinitz said, was "a tacit message to the Iranians that Russia is not in their pocket" in Syria.
Otherwise, when picking literary novels, readers seemingly sent a tacit message to judging panels, going for books by the reliable old favourites – Sebastian Faulks (41), William Boyd (77), Kazuo Ishiguro (85) – that they had rejected.
Between the lines was a tacit message to Israel: Kill more.
A buttoned-up company president who shows little personality sends a tacit message to employees that they too should keep within a set of narrow boundaries for self-expression at all times.
But the Nobel committee did China a favor in sending the tacit message with its peace prize: Don't get too cocky and think that you have rewritten the laws of gravity.
Elite, all-male and lily-white, rife with snobbery and bigotry, they didn't bother to hang a shingle outside, and the tacit message to pedestrians was clear: keep on walking.
As a result, assessment of learning in science courses may not align with desired learning outcomes and may send a tacit, unintended message to students about the nature of the learning in which they should engage.
The tacit message from the league is that a little drinking is OK, but no drugs.
You see, not only did these young men grow up in a culture that minimizes women every single day -- in ways large and small -- they also grew up in a community that elevates athletes to god-like status and sends them the tacit message that they -- as men and as sports heroes -- are "better than".
