the mind > mental capacity > knowledge > knowledge, what is known > familiarity > [adverb] (7)
Clearly, manifestly; familiarly.
As an everyday matter or matter of course; customarily, commonly, usually; habitually. Now rare.
Familiarly, intimately. Obsolete.
At ease as if in one's own home; in one's element; familiar or conversant with; well versed in.