Closely familiar; current; having frequent interaction. / Familiar or acquainted by use or study; well-informed; versed. / (obsolete) Concerned; occupied.

One who converses with another.

plural of conversant

Expression and exchange of individual ideas through talking with other people; also, a set instance or occasion of such talking. / (fencing) The back-and-forth play of the blades in a bout.

(nonstandard, transitive, intransitive) To engage in conversation (with).

(formal, intransitive) To talk; to engage in conversation. / (followed by with) To keep company; to hold intimate intercourse; to commune.

(now literary) Free verbal interchange of thoughts or views; conversation; chat.

opposite; reversed in order or relation; reciprocal

The opposite or reverse. / (logic) Of a proposition or theorem of the form: given that "If A is true, then B is true", then "If B is true, then A is true.".

(now chiefly African-American Vernacular, nonstandard) To converse, to have conversation.