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Webster 1913 Edition

adv.

In a comfortable or comforting manner.

Speak ye

comfortably

to Jerusalem.

Is. xl. 2.

comfortably ‎(comparative more comfortably, superlative most comfortably)

In a comfortable manner.
- 2016 April 18, Phil McNulty, “Chelsea 1-0 Barcelona”, in BBC Sport:
  Messi was the next to test Cech with a header from Sanchez's cross, the Chelsea keeper gathering the effort comfortably as Barcelona once more failed to produce the final touch to accompany their artistic approach work.

in a comfortable manner