o·ti·ose (ōshē-ōs′, ōtē-)
1. Lazy; indolent.
2. Of no use; pointless or superfluous: It is otiose to review what happened when the events are so well-known.
3. Ineffective; futile. See Synonyms at vain.
[Latin ōtiōsus, idle, from ōtium, leisure.]
o′ti·osi·ty (-ŏsĭ-tē) n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.