Otiose \OH-shee-ohs; OH-tee-\, adjective:

1. Ineffective; futile.
2. Being at leisure; lazy; indolent; idle.
3. Of no use.

Mr. Federspiel’s surreal flourishes and commentaries straddle the line between interesting and otiose. Most of the surrealism is pretty but pointless.
— D. F. Wallace, “The Million-Dollar Tattoo”, New York Times, May 5, 1991

Although the wild outer movements and the angular Minuet can take such clockwork precision, the Andante, with its obsessive, claustrophobic dialogues between strings and bassoons, seemed sluggish and otiose.
— Tim Ashley, “VPO/Maazel”, The Guardian, April 16, 2002

The umlaut he affected, which made no difference to the pronunciation of his name, was as otiose as a pair of strategically positioned beauty spots.
— Peter Conrad, “Hidden shallows”, New Statesman, October 14, 2002

One hazard for religions in which all professional intermediaries are dispensed with, and in which the individual is enjoined to ‘work out your own salvation’ and is regarded as fully capable of doing so, is that belief and practice become independent of formal organized structures which may in such a context come to be perceived as otiose.
— Lorne L. Dawson, “The Cultural Significance of New Religious Movements: The Case of Soka Gakkai”, Sociology of Religion, Fall 2001

Otiose is from Latin otiosus, “idle, at leisure,” from otium, “leisure.”

Dictionary.com Entry and Pronunciation for otiose

Pretty obscure, but I am constantly amazed at the vocabulary of people on YouTube. This doesn’t sound like a word that will work its way back into common usage. Futile does the job so well. Can you imagine “We are Borg. Resistance is otiose!”? Just doesn’t play.

Apparently, tracking the proliferation of the word “Fusion” in product naming is an exercise in otiosity.

Fusion the link!

As videos go, this one is pretty boring – just a pair of hands on a piano, but I like the music and it kind of sounds appropriately otiose.

Play that funky link white boy!