soundless

¹ American  

[sound-lis] / ˈsaʊnd lɪs /

adjective

1. without sound; silent; quiet.

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soundless ² American  

[sound-lis] / ˈsaʊnd lɪs /

adjective

1. unfathomable; very deep.

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soundless ¹ British  

/ ˈsaʊndlɪs /

adjective

1. extremely still or silent

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soundless ² British  

/ ˈsaʊndlɪs /

adjective

1. poetic extremely deep

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Other Word Forms

Derived Forms

• soundlessness
  noun
• soundlessly
  adverb

Etymology

Origin of soundless¹

First recorded in 1595–1605; sound ¹ + -less

Origin of soundless²

First recorded in 1580–90; sound ³ + -less