Synonyms for Open to question

Synonyms starting with letter U

• uncertain

  controversial, at issue, debatable
• unsettled

  doubtful, uncertain, controversial
• unsure

  debatable, doubtful
• undecided

  uncertain, debatable, controversial
• up in the air

  uncertain
• undetermined

  uncertain
• unresolved
• unanswered

  uncertain
• unreliable

  doubtful
• unconfirmed

  questionable, doubtful
• under discussion

  at issue
• unproven

  doubtful
• unsolved
• unsupported

  questionable
• unusual
• undefined
• under advisement
• under examination
• unfinished
• unconcluded
• uncorroborated

  questionable
• up for discussion

  debatable, controversial
• uncommon
• unclear
• unpredictable
• unsubstantiated
• unsafe
• unknown
• unforeseeable
• unsound