She felt that she had her parents' tacit approval to borrow the car.
There was a tacit agreement that he would pay off the loan.
While they got a frosty public response, officials say the private message was a tacit green light. —Mark Thompson, Time, 16 Nov. 1998
Magic requires tacit cooperation of the audience with the magician—an abandonment of skepticism … the willing suspension of disbelief. —Carl Sagan, The Demon-Haunted World, 1996
What a writer must always remember, however, is that with rare exceptions—Edith Wharton then, Louis Auchincloss now—he or she is never really in society; a temporary visa is issued with the tacit stipulation that it will be withdrawn and access denied if confidences are betrayed. —John Gregory Dunne, Harp, 1989
Myself, I like to play the field and see what happens, but there are certain tacit rules: do not mix freshwater fish with those from the sea; do not mix coarse fat fish with delicate ones … —M.F.K. Fisher, With Bold Knife and Fork, 1969