co-operating (part of speech: verb)
dovetailing, uniting, meshing, intermeshing, reciprocating, collaborating, affiliating, intertwining, colluding, allying, interweaving, banding, concurring, associating, pooling, sharing, trading, co-operating, overlapping, interlacing, confederating
participating (part of speech: verb)
- At these afternoon parties, there were a variety of simultaneous activities, instead of everyone participating in the same activities together as a group. - "Our Legal Heritage, 4th Ed.", S. A. Reilly.
- She felt that in helping him she was participating in his crimes, and yet, she asked herself, what woman would have acted differently? - "A Tale of a Lonely Parish", F. Marion Crawford.
- Special care should be taken not to harm anybody not participating in disturbances, especially aged people, children and women. - "Korea's Fight for Freedom", F.A. McKenzie.