undoubtedly

[uhn-dou-tid-lee]

adverb

1. certainly or definitely; without doubt.

   Seats will undoubtedly sell out fast for this one-night performance.

Word History and Origins

Origin of undoubtedly¹

First recorded in 1500–50; undoubted ( def. ) + -ly ( def. )

Related Words

• assuredly 
• definitely 
• doubtless 
• easily 
• indeed 
• really 
• surely 
• truly 
• undeniably www.thesaurus.com
• unquestionably