backward(s) and forward(s)

back and forth

1. adjective In one direction and then another in an alternating fashion. During the party, I went back and forth to the kitchen to get drinks for the guests. The kids are outside throwing the baseball back and forth.
2. noun An argument or discussion in which two or more people alternate in sharing their perspectives. They're having a real back and forth up there—can you hear them yelling? I think we should have a little back and forth before we make a final decision.
See also: and, back, forth

backward(s) and forward(s)

Back and forth; moving in one direction and then the opposite. Can be used literally to refer to something or someone moving in such a way, or figuratively to refer to a situation in which no progress is made (e.g., an argument). I was pacing backwards and forwards in my room last night, worrying about this morning's exam. The two candidates debated the gun laws backward and forward, but neither could offer a productive solution in the end.
See also: and

backward and forward

Also, backwards and forwards.
1. Same as back and forth.
2. Thoroughly, completely, as in He read the speech over and over, until he knew it backwards and forwards. [Late 1500s]
See also: and, backward, forward