undubiously

• a word derived from dubious.
  dubious

  adjective

  doubtful; marked by or occasioning doubt.

Related Words

• arguable
• debatable
• equivocal
• fishy
• hesitant
• improbable
• problematic
• questionable
• reluctant
• shady
• skeptical
• suspicious
• uncertain
• unclear
• unconvinced
• unreliable
• unsure