She felt that she had the tacit consent of her parents to borrow the car. There was an unspoken agreement for him to return the loan. These examples are automatically selected from different sources of online messages to reflect the current use of the word tacit. The opinions expressed in the examples do not reflect the views of Merriam-Webster or its publishers. Send us comments. Britannica English: translation of the spoken language for middle English or Latin in Arabic; the tacits of the centre of Franconia, of the Latin implicitly soilent, of the participatory past of tacére; the same old German degen to shut up See the full definition of tacit in the dictionary of English learners While they received a frosty public response, officials say the private message was an unspoken green light.