| eclipsed(obscure, dark, secret, unknown, hidden) |
| enigmatic(mysterious, private, reticent, taciturn, covert) |
| esoteric(obscure, dark, secret, unknown, hidden) |
| feline(mysterious, private, reticent, taciturn, covert) |
| furtive(mysterious, private, reticent, taciturn, covert) |
| green(adjective, innocent, thick, unfamiliar, unconscious) |
| hermetic(obscure, dark, secret, unknown, hidden) |
| hermetical(adjective, obscure, dark, unknown, hidden) |
| hidden(adjective, secret, unknown, unknowing, concealed) |
| hushed(mysterious, private, reticent, taciturn, covert) |
| illiterate(adjective, innocent, thick, unfamiliar, unconscious) |
| imbecilic(adjective, innocent, thick, unfamiliar, unconscious) |
| imperceivable(adjective, obscure, dark, unknown, hidden) |
| in a whisper(expression, idiom) |
| in chambers(expression, adjective, mysterious, reticent, taciturn) |
| in darkness |
| in hidlings |
| in privacy(expression, adjective, mysterious, reticent, taciturn) |
| in private(expression, adjective, mysterious, reticent, taciturn) |
| in the night(expression, idiom) |