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

• Lexulous
• Wordscraper
• Wordosaur

ad. In a horrendous manner.

"So they demanded subsidies from the government to enable them to vie with the Medicare program they described as horrendously inefficient, unpopular and bureaucratic. excess payments over 10 years to compete with Medicare-subsidies that Obama would sensibly cut to help pay for health care reform."

tremendously