It's Merriam-Webster's Word of the Day for July 17th.
Today's word is Oceos, also pronounced O-D-O-S, and spelled O-T-I-O-S-E.
Oceos is an adjective.
It's a formal word, typically used to describe either something that serves no useful purpose,
or something that has no use or effect.
Here's the word used in a sentence from The Guardian by Martin Kettle.
Christian Tetzlaff has only begun to play the concerto recently, but it was a masterly performance.
The concentrated tension, always the hallmark of Tetzlaff's playing, never flagged.
In other hands, an encore might have been oceos after all that,
but Tetzlaff's playing of the Andante from Bach's A Minor solo sonata proved just as magical and seemed to draw the entire hall into its hushed meditations.
In this life, some pursuits seem destined to set the world on fire,
while others simply aren't worth the candle.
That's where the word oceos comes in.
The adjective traces back to the Latin noun otium, meaning leisure.
When Oscios was first used in the late 18th century, it described things that,
like leisure, at least according to some, are pointless or otherwise produce no useful result.
As in, it would be Oscios to ask you about the book, since you haven't read it yet.
By the mid-19th century,
it was also being used to describe people who indulge a bit too much in leisure and idleness,
your loafers, layabouts, and lazy bones, and thus need a fire lit under them.