The best replacement for colleagues is coworkers.

The best alternatives to colleagues are rated as following:
★★★★★  coworkers
★★★  peers
★★  dear colleagues
★★  colleagues
★  co-workers
★  co workers
★  colleagues'
★  et al
  dear all

Your alternative for colleagues is not listed? Suggest!
Speaking about colleagues, one probably shouldn't forget about respect.

Other search terms related to colleagues and their ratings are:
★★★★★ respect
You have in mind a companion for colleagues and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of colleagues in all years. Click on graph for more.
colleagues
coworkers
peers