A marked change or difference in behaviour or in a situation is very obvious or noticeable:
There was a marked improvement in my health when I gave up smoking.
Unemployment has fallen again, although the change is less marked than last month.
The president spoke with passion for an hour, in marked contrast to his subdued address yesterday.
obvious or noticeable:
There was a marked improvement in my health when I started exercising.
very obvious:
more/less marked In the US, the fall has been even more marked, from 10.1 per cent in September to 6.6 per cent.
a marked slowdown/increase/change There has been a marked slowdown in revenue growth.
written or printed on something:
Everything in the store is being offered at 20% less than the marked price.