quite (adv.)to a degree (not used with a negative);
quite (adv.)to the greatest extent; completely;
quite (adv.)of an unusually noticeable or exceptional or remarkable kind (not used with a negative);
we've had quite an afternoon
her victory was quite something
Synonyms: quite a / quite an
quite (adv.)actually or truly or to an extreme;
it's quite the thing to do
was quite a sudden change