From the Latin dubitabilis (“doubtful”).
dubitable (comparative more dubitable, superlative most dubitable)
- Capable of being doubted; susceptible of being questioned.
- “dubitable” in Noah Webster, An American Dictionary of the English Language, volume I (A–I), 1st edition, New York, N.Y.: Published by S. Converse; printed by Hezekiah Howe, New Haven, 1828, OCLC 999480247.
- dubitable in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
- “dubitable” in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–.
- Oxford English Dictionary, 2nd ed., 1989.
- Random House Webster's Unabridged Electronic Dictionary, 1987-1996.