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

• Lexulous
• Wordscraper
• Wordosaur

adj. comparative form of testy: more testy

"As I think you can discern from your conversations with me the last few years, I've been testier and a little more on edge as the volume surrounding what we do ramps up and the anger associated with politics rises."