Blockader refers to a person or object that blocks or obstructs a passage, a person or organization that enforces a blockade, or a vessel used for blockade. There are various synonyms that can be used in place of blockader. Some of the most commonly used synonyms for blockader include obstructor, barricader, barricade, impediment, blocker, clog, barrier, barrierer, stopper, and hindrance. Other synonyms include interdictor, interceptor, interloper, interdict, enforcer, discipliner, deterrence, dissuasion, and restraint. The choice of synonym depends on the context in which it is used. Each synonym has its distinct meaning and usage, and it is essential to choose the right one to convey the intended message accurately.