"Frit" = frightened.

A term made famous by Maggie Thatcher who, having had a disastrous start to her first term as Prime Minister, became the Nation's heroine after we won the Falklands War. Accused by Denis Healey (one of the Opposition leaders in the House of Commons) of "cutting and running" when she called an early General Election on the basis of her sudden popularity, she riposted the he was "frightened, frightened, frit".

It's a dialect form of the word, used throughout the English Midlands. She was born in Grantham, a little town only a dozen miles from the village where I grew up. When I was a child, it was a familiar taunt: "Yah: frit!", and she, presumably was equally familiar with it, and reverted to childhood expressions in the excitement of the cut & thrust of Commons debate.