This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of or pertaining to Congress or a congress.

adj. Of or pertaining to a congress, especially, to the Congress of the United States.

Of or pertaining to a congress, or, specifically (commonly with a capital), to the Congress of the United States: as, congressional debates; the“Congressional Record.”

adj. of or relating to congress

"Ten years earlier, “submission”—as in, submission to the states for ratification—had been the euphemism congressional drys had used in place of the scarier “Prohibition.”"

concessional    confessional    nonprofessional    obsessional    processional    professional    unprofessional   

legislative    parliamentary    presidential    federal    senatorial    mayoral    judicial    electoral    consular    statutory