Definitions of quietly:

• adverb:   with little or no sound

  Example: "The class was listening quietly and intently"

• adverb:   with little or no activity or no agitation (`quiet' is a nonstandard variant for `quietly')

  Example: "Her hands rested quietly in her lap"

• adverb:   with low volume

  Example: "She spoke quietly to the child"

• adverb:   in a restful manner