When it comes to describing a desperate criminal, there are several synonyms that can be used to illustrate the same idea. Some possible options include "outlaw," "fugitive," "menace," "culprit," "offender," "perpetrator," "delinquent," "bandit," "thief," "convict," and "outcast." Each of these words carries its own unique connotations and can be used to convey different nuances about the individual in question, but they all serve to underscore the idea that this person is in dire straits and has resorted to criminal behavior as a result. Whether it's a thief on the run or a violent offender, a desperate criminal is someone to be aware of and avoid if possible.