producing a relaxing feeling of physical comfort esp. because of shape or materials:
a comfortable bed/car/dress
Are you comfortable or is it too hot?
Comfortable also means relaxed:
I’m not comfortable speaking in front of an audience.
Comfortable also means having enough money for a good standard of living:
They’re not rich but I think they’re quite comfortable.
In a competition, if you have a comfortable lead over the other competitors you are winning easily.