Entry 1 sense Webster, 1913 Clancular · Clan·cu·lar · IPA /ˈklæŋkjʊlə(ɹ)/ 01 a. Conducted with secrecy; clandestine; concealed. 1. Conducted with secrecy; clandestine; concealed.[Obs.] “Not close and clancular, but frank and open.” — Barrow.