Synonyms for Doubtable

Synonyms starting with letter O

• open

  doubtful, questionable
• open to question

  at issue, doubtful
• odd

  doubtful
• open to doubt

  doubtful
• obscure

  doubtful, questionable
• on thin ice

  questionable
• open to discussion

  at issue
• overt
• out of line
• open discussion
• out-of-line
• off the deep end
• off deep end
• out on limb
• on the spot
• on slippery ground
• on the qui vive
• obstructive
• oppositional
• opposed
• open to suspicion