Rebbetzin Zahava Braunstien a’h related a story that took place with the Bobover Rebbe, Rav Shlomo Z’l that directly relates to the topic at hand.
The story goes that a certain chassid started relationships with people other chassidim considered “not appropriate”. They tried to dissuade him of these relationships and when unsuccessful, approached the Rebbe who advised them to let him look into the matter and deal with it as necessary. On the appointed day, this chasid came into the Rebbe and they discussed the importance of good chaverim in general and these chaverim and the nature of these chaverim specifically… after some discussion in which the chassid tried to explain his association with these chaverim, something which the Rebbe disagreed with, the Rebbe took another approach. The Rebbe asked him, (of course he said it in yiddish, I am paraphrasing in english), tell me please, what does “usmager” mean. The chassid replied with a blank stare. Again, “Nuuuuu what does usmager mean?” Again, the same blank stare. Once again the Rebbe asked, “usmager, come on, you daven shmone esrei three times a day, in the bracha of vilamalshinim, we say vihazeidim, miheira siaker, usishaber, usmager…tell me please what does usmager mean”. The chassid replied, I dont know. To which the Rebbe replied, in truth I dont either know, but, from his chaverim in the passuk I know it isnt something good. He got the message.