i Register
In some senses, ours is marked as colloquial. Watch for register when choosing this word.
ADJ.
best, better, far, favourite, large, mechanical, new, opposite
Our mechanical engineer solved the problem that had stumped everyone else.
VERB + OURS
accord, books, house, like, said, say, seats, see
We said ours was the best house on the street, but nobody really believed us.
PREP.
in, than, with, without
In ours, we have a big kitchen where everyone gathers to cook together.
ADV.
essentially
The problem we're facing is essentially ours to solve, no one else's.