| iced(verb, adjective, close, quiet, soft) |
| in chambers(expression, mysterious, private, reticent, taciturn) |
| in privacy(expression, mysterious, private, reticent, taciturn) |
| in private(expression, mysterious, private, reticent, taciturn) |
| in the background(expression, idiom, mysterious, reticent, taciturn) |
| in the dark(expression, idiom, mysterious, reticent, taciturn) |
| inarticulate(quiet, soft, still, silent, dazed) |
| inaudible(adjective, close, quiet, soft, low) |
| incoherent(quiet, soft, still, silent, hushed) |
| inconversable(adjective, close, quiet, soft, restrained) |
| indistinct(quiet, soft, still, silent, hushed) |
| inert(adjective, calm, quiet, smooth, tranquil) |
| inhibited(quiet, soft, still, silent, hushed) |
| inobtrusive(adjective, quiet, soft, low, silenced) |
| laconic(quiet, soft, still, aloof, reserved) |
| lifeless(adjective, calm, quiet, smooth, tranquil) |
| low(adjective, close, quiet, soft, peaceful) |
| low-pitched(adjective, close, quiet, soft, low) |
| middle-ground |
| motionless(adjective, calm, quiet, smooth, tranquil) |