[more heartily; most heartily]
1 : in an enthusiastic and energetic way : in a hearty way
The children ate heartily. [=they ate a lot of food]
We all laughed heartily.
I heartily recommend the movie.
2 : completely or fully
I'm heartily sick of their complaints.
I'll be heartily [=very] glad when this job is done.
They heartily agreed.