in large amounts, to a high degree, or with great severity [= very]:
I became heavily involved in politics.
The report was heavily criticized in the press.
a heavily populated area
thousands of heavily armed troops
His wife was heavily pregnant at the time.
it rains/snows heavily
It's been raining heavily all day.
Paul was drinking heavily by then.
Britain is heavily dependent on imports for its raw materials.
if you sleep heavily, you cannot be woken easily
to breathe slowly and loudly:
Breathing heavily, I stopped and sat down to rest.
having a large broad body that looks strong
if you do or say something heavily, you do it slowly and with a lot of effort, especially because you are sad or bored:
He was walking heavily, his head down.
Emily sighed heavily.
'I suppose so,' she said heavily.
to do something a lot or be very interested in it:
Sid was heavily into drugs by the time he left school.