There are multiple synonyms for the term "obstruction to congressional action," including hindrance, blockade, obstacle, impasse, interference, and obstructionism. These terms all refer to actions or situations that prevent or delay the progress of legislation in Congress. Examples of obstructive behavior include filibustering, boycotting committee meetings, and refusing to compromise on legislation. Obstruction to congressional action can have negative consequences for the functioning of government, as it can prevent necessary bills from passing and lead to political gridlock. It is important for elected officials to work together and find common ground to overcome such obstacles and facilitate effective governance.