Lewis Short
(adjective) : clandestīnus, a, um, for clamdies-tinus; cf. matutinus; v. Corss. Ausspr. 1, p. 461 sq.
* Secret, hidden, concealed, clandestine (class. in prose and poetry): suspitio,Plaut. Am. 1, 2, 28: nuptiae,id. Cas. 5, 3, 6: natura,Lucr. 1, 779: motus materiaï,id. 2, 127: scelere,Cic. Sull. 11, 33; cf. Liv. 42, 18, 1: introitus,Cic. Off. 2, 23, 81; cf. Suet. Ner. 48: colloquia cum hostibus,Cic. Sen. 12, 40: consilia, Crassus ap. Cic. Or. 66, 223; Caes. B. G. 7, 1; cf. Liv. 42, 24, 3: nuntiis legationibusque,Caes. B. G. 7, 64: fuga, Auct. B. G. 8, 33: foedus,Liv. 3, 36, 9; Sil. 7, 267: denuntiatio,Liv. 4, 36, 3: coetus,Tac. A. 2, 40; 4, 27.—Adv.: clandestīnō, secretly; only Lucil. ap. Non. p. 38, 19, and Plaut. Mil. 4, 1, 10.
Charlton T. Lewis, Charles Short, A Latin Dictionary