Antonyms of adj idiosyncratic

1 sense of idiosyncratic

Sense 1
idiosyncratic -- (peculiar to the individual; "we all have our own idiosyncratic gestures"; "Michelangelo's highly idiosyncratic style of painting")

INDIRECT (VIA individual) -> common -- (belonging to or participated in by a community as a whole; public; "for the common good"; "common lands are set aside for use by all members of a community")

Similarity of adj idiosyncratic

1 sense of idiosyncratic

Sense 1
idiosyncratic -- (peculiar to the individual; "we all have our own idiosyncratic gestures"; "Michelangelo's highly idiosyncratic style of painting")
       => individual (vs. common), single -- (being or characteristic of a single thing or person; "individual drops of rain"; "please mark the individual pages"; "they went their individual ways")