doubtless: Meaning and Definition of

doubt•less

Pronunciation: (dout'lis), [key]
— adv.
  1. without doubt; certainly; surely; unquestionably.
  2. probably or presumably.
—adj.
  1. free from doubt or uncertainty; certain, sure.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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