familiarly

adverb7

1. •
   With a lack of formality.
2. •
   Colloquially; of common or vernacular speech, as opposed to scholarly language.

   • The giant panda, familiarly known as a "panda bear", is not actually a bear at all.
3. •
   In a casual or informal manner, as with a close acquaintance; especially when such behavior may be considered inappropriate.

   • He spoke familiarly to the hotel porter.
4. •
   (old-fashioned) In an inappropriately sexual or romantic manner.

   • ‘Oh, my oath,’ Dan said, and ‘chucked’ Mrs. Brown familiarly under the chin. ‘Get along wid you!’ she cried, jumping back and colouring up. — 1911
5. •
   With knowledge or experience.
6. •
   In a manner expressing comprehensive or intimate knowledge.

   • The instructor spoke familiarly about the dangerous conditions on the mountain during the winter.
7. •
   In a manner prompting recognition or recollection.

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