(a)familiarwithin normal everyday experience; common and ordinary; not strange“familiar ordinary objects found in every home”, “a familiar everyday scene”, “a familiar excuse”, “a day like any other filled with familiar duties and experiences”
(s)conversant, familiar(usually followed by `with') well informed about or knowing thoroughly“conversant with business trends”, “familiar with the complex machinery”, “he was familiar with those roads”
(s)familiar, intimatehaving mutual interests or affections; of established friendship“on familiar terms”, “pretending she is on an intimate footing with those she slanders”