Unclogging refers to the process of clearing a blockage or obstruction. Synonyms for unclog include clear, unblock, open up, free, dislodge, remove, release, and eliminate. When a pipe or drain is blocked, it is necessary to unclog it to restore its normal functioning. Unclogging can also refer to opening up a congested traffic route or removing a logjam in a project or process. Synonyms for unclog can be used interchangeably depending on the context to describe the unblocking of something that is impeding the flow or causing hindrances to progression.