| covert(adjective, cover, show, obscure, dark) |
| concealed(adjective, cover, show, obscure, dark) |
| hidden(adjective, cover, show, obscure, dark) |
| ulterior(adjective, cover, show, obscure, secret) |
| buried(adjective, cover, show, obscure, dark) |
| incognito(adjective, adverb, secret, spy, covert) |
| obscured(adjective, cover, show, obscure, dark) |
| secret(adjective, spy, covert) |
| shrouded(adjective, cover, obscure, dark, unknown) |
| abstruse(adjective, obscure, dark, unseen) |
| clandestinely(adverb, show, clandestine, furtively, underhandedly) |
| close(adjective, obscure, dark, unseen) |
| clouded(adjective, obscure, dark, unseen) |
| furtive(adjective, secret, spy, covert, recreant) |
| hooded(adjective, shielded) |
| incommunicado(isolated, reclusive, uncompanionable) |
| latent(adjective, obscure, dark, unseen) |
| masked(adjective, underhanded, privy) |
| mysterious(adjective, obscure, dark, unseen) |
| obscure(adjective, cover, dark, isolated, equivocal) |