• dark (subs.): chiefly with prep., as in phr. after dark, in the dark: the former best expr. by (de) nocte: v. night (by): in the d., *per obscurum [locum]; sine lumine. Fig.: to be in the d., i. e. ignorant, cālīgare, Plin.: Sen.: I am in the d. about those matters, mihi tenebrae ista sunt, Cic.: it was not done in the d., nec clam illud occulteque factum est, Plin.: my evil deeds are now discovered, which I hoped would be kept in the d., mea nunc facinora aperiuntur, clam quae speravi fore, Pl.: I am quite in the d., prorsus non intelligo, clam me est, Pl.: Ter.