1. Too simple to bother detailing. 2. Not
worth the speaker's time. 3. Complex, but solvable by methods so
well known that anyone not utterly cretinous would have
thought of them already. 4. Any problem one has already solved
(some claim that hackish `trivial' usually evaluates to `I've
seen it before'). Hackers' notions of triviality may be quite at
variance with those of non-hackers. See nontrivial,
uninteresting.
The physicist Richard Feynman, who had the hacker nature to an
amazing degree (see his essay "Los Alamos From Below" in
"Surely You're Joking, Mr. Feynman!"), defined `trivial
theorem' as "one that has already been proved".
Related:
ivial: adj. 1. Too simple to bother detailing. 2. Not worth the
speaker's time. 3. Complex, but solvable by methods so well known
that anyone not utterly {cretinous} would have thought of them
already....