it is pronounced 'gosh' O my Gosh!!- she reacted to his gauche behaviour.
gauchy sounds like gochy(dothy weared by old people)in modern days wearing gochy is clumsy or awkward
South American GAUCHOS (cowboys) lack grace.
Sound like Gosh.. somewon who eat GOSHT lacks social values
GAUCHE=GAAV+CHE. CHE, he is from GAAV, he is tactless/dont have the grace.
Tanya Gosh(gauche) is a clumsy girl who always spilt coffee over others while serving.
similar to gaucherie
gauche sound like douche(douchebag)..