familiarly

With a lack of formality:

He spoke familiarly to the hotel porter.

With a lack of formality:

With a lack of formality:

The giant panda, familiarly known as a "panda bear", is not actually a bear at all.

With knowledge or experience:

The voice from downstairs sounded familiarly like a foghorn, and right away he knew that Uncle Fred had arrived.

With knowledge or experience:

The instructor spoke familiarly about the dangerous conditions on the mountain during the winter.