This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

ad. Without bending; with rigid adherence to a principle etc.

Without bending; obstinately.

"Thus much I learned, that between the Pole and the Russian there was a marked line, which allowed of but little or no amalgamation between the two races, and that the Pole shrunk unbendingly from the society of his conquerors."