We used to have serious drinkers come and sit at the bar.
His face had a florid complexion, but he didn't otherwise look like a serious drinker.
For the serious drinker these days, even a straight one invites suspicion.
"It seems to come earlier every year," the serious drinker said, ordering his own brand of antifreeze.
I shall retire at midnight, after which the serious drinkers will take over.
Clears the table & gives us serious drinkers a little peace to enjoy a wee spirit of our own.
I'd say your guy was a serious drinker and had at least one treatment to revitalize.
He was also known as a serious drinker.
They were the serious drinkers, who drank as if there was no tomorrow and rather hoped this would be the case.
A corner bar had stools for six serious drinkers.