1. Serving no useful purpose; having no excuse for being
   "otiose lines in a play"
   - pointless, purposeless, senseless, superfluous, wasted 
2. Producing no result or effect
   "an otiose undertaking"
   - futile, ineffectual, unavailing 
3. Disinclined to work or exertion
   - fainéant, indolent, lazy, slothful, work-shy

See also: idle, useless, worthless

• classical music
• classical mythology
• classical scholar
• classical style
• classicalism
• classically
• classicise
• classicism
• classicist
• classicistic
• classicize
• classics
• classifiable
• classification
• classification system
• classificatory
• classified
• classified ad
• classified advertisement
• classified stock
• classifier
• classify
• classifying adjective
• classis
• classism