Perfect word but a bit negative. Came into English from 18th century French where it meant and still means ‘awkward’ or ‘maladroit’ (yet another French word still used.)
I’d say it is a very apt word to describe La Truss. ‘Gauche’ with the same spelling in French and meaning ‘left’ could also imply the turn she took as she left.
Thinking of the embarassing curtsy, can you imagine what King Charles said when she turned up to resign. 
. His father would have had something pithy to say, I have no doubt.
By the way, I recommend Deeple for translations rather than Google.
DeepL Traduction – DeepL Translate : le meilleur traducteur au monde
