covert UK /ˈkʌvət/US /ˈkoʊvɚt/noun 5adjective 3forms 4 noun5 •A covering. •A hiding place. •Area of thick undergrowth where animals hide. •A feather that covers the bases of flight feathers. •A disguise. adjective3 •Secret, surreptitious, concealed.how covert matters may be best disclosed — 1599 •(historical) Under coverture.[…] a separate use for a woman cannot be created unless she is covert, or unless in immediate contemplation of her marriage. — 1880 •(no longer used) Hidden, covered over; overgrown, sheltered.Within that wood there was a covert glade, Foreby a narrow foord, to them well knowne […] — 1590 formscoverts · more covert · covertest · most covert