The antonyms for the word "most one-way" can be "bidirectional," "two-way," or "mutual." These terms refer to situations in which there is a flow of communication, movement, or exchange in both directions. A bidirectional road, for instance, allows vehicles to travel in opposite directions, while a two-way conversation implies a dialogue where both parties share their thoughts and feelings. Mutuality signifies a relationship or an agreement in which both sides have equal rights, responsibilities, and benefits. While "most one-way" suggests a dominant or one-sided approach, antonyms like bidirectional, two-way, and mutual suggest more cooperative and balanced ways of interacting.