That which, although not expressed, is understood from the nature of the thing, or from the provision of the law; implied.
Law Dictionary – Alternative Legal Definition
Silent; not expressed; implied or inferred; manifested by the refraining from contradiction or objection; inferred from the situation and circumstances, in the absence of express matter. Thus, tacit consent is consent inferred from the fact that the party kept silence when he had an opportunity to forbid or refuse. Tacit acceptance. In the civil law, a tacit acceptance of an inheritance takes place when some act is done by the heir which necessarily supposes hia intention to accept and which he would have no right to do but in his capacity as heir. Civ. Code La. 1900, art. 988. Tacit hypothecation. In the civil law, a species of lien or mortgage which is created by operation of law without any express agreement of the parties. Mackeld. Rom. Law,