doing something without attracting attention or letting others know; on the quiet

quietly; in a silent or stealthy manner

extremely quiet; very still; hushed and without any sound

quiet and noiseless; silent

Private words or confidences spoken in a low voice, especially between lovers or close friends; sweet nothings.

in a low voice; with little or no sound

completely silent; all is quiet

(dialect) quietly; without a sound; stealthily

softly; quietly