clandestine

/klan-ˈde-stən/

Middle French or Latin; Middle French clandestin, from Latin clandestinus, from clam secretly; akin to Latin celare to hide

adjective

  1. marked by, held in, or conducted with secrecy : surreptitious

a clandestine love affair

secret covert stealthy furtive clandestine surreptitious underhanded mean done without attracting observation. secret implies concealment on any grounds for any motive. covert stresses the fact of not being open or declared.