"Lamster" is a slang term that typically refers to someone who attempts to escape from police custody or the law. There are several other words that could be used as synonyms for "lamster." Some of these words include "fugitive," "escapee," "runaway," "outlaw," "absconder," and "prisoner on the loose." Each of these words carries a slightly different connotation and may be used in different contexts. Regardless of which word is used, all synonyms for "lamster" indicate a person is attempting to avoid legal consequences by fleeing from authorities.