What is the meaning of Familiarly?

With a lack of formality:

1. In a casual or informal manner, as with a close acquaintance; especially when such behavior may be considered inappropriate.

   In a casual or informal manner, as with a close acquaintance; especially when such behavior may be considered inappropriate.

   In an inappropriately sexual or romantic manner.

   Colloquially; of common or vernacular speech, as opposed to scholarly language.

   With knowledge or experience:

   1. In a manner prompting recognition or recollection.

      In a manner prompting recognition or recollection.

      In a manner expressing comprehensive or intimate knowledge.

      Source: wiktionary.org