Tac"it (?), a. [L. tacitus, p. p. of
tacere to be silent, to pass over in silence; akin to Goth.
þahan to be silent, Icel. þegja, OHG.
dagēn: cf. F. tacite. Cf. Reticent.] Done
or made in silence; implied, but not expressed; silent; as, tacit
consent is consent by silence, or by not interposing an objection. --
The tacit and secret theft of abusing our brother in
civil contracts. Jer. Taylor.