Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adv. Without question; indubitably.

from the GNU version of the Collaborative International Dictionary of English

  • adv. Unquestionably.

from The Century Dictionary and Cyclopedia

  • Unquestionably.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adv. without doubt; certainly

Etymologies

doubtless +‎ -ly (Wiktionary)

Examples

Comments

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  • A rare variant of the adverb 'doubtless'. The BNC goes 100:1 in favour of 'doubtless', though it's a little more common on Google as a whole, whilst still very much a minority form. I'm not aware that I've ever come across it before.

    March 26, 2009