wombat
adj. Profoundly uninteresting or useless. —n.

Example Citations:
Trying to keep abreast of new terminology might seem, to use Silicon Valley lingo, to be WOMBAT duty — a waste of money, brains and time.
—Joseph Kahn, “Between Wall Street and Silicon Valley,a New Lexicon,” The New York Times, January 1, 2000

Finally, besides the obvious threat to public safety, the whole text-messaging thing strikes us as a WOMBAT (waste of money, brains and time).
—“Just what teen drivers need: text-messaging,“ The Beaumont Enterprise, November 5, 2007

Earliest Citation:
WOMBAT [Waste Of Money, Brains and Time] adj. Applied to problems which are both profoundly UNINTERESTING in themselves and unlikely to benefit anyone interesting even if solved.
—Guy Steele, et al., “Jargon File,“ MIT, June 12, 1990

Notes:
This sense of the word comes from the acronym WOMBAT: Waste Of Money Brains And Time.

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