1. serving no practical purpose; pointless or futile
Usage: formal; often used in academic or legal contexts
2. serving no function; superfluous or redundant
Usage: formal

Examples

• The committee's otiose debate about the color of the office walls wasted valuable time.
• Adding another layer of approval to the process seemed otiose given the existing safeguards.
• His otiose remarks contributed nothing to the discussion.
• The regulation proved otiose once the underlying problem was solved.
• She dismissed the suggestion as otiose and impractical.
• The otiose ceremony added no real value to the proceedings.