Answer:
French, literally left.
Step-by-step explanation:
The etymology of the word, Gauche is French literally left. Etymology refers to a sequential breakdown of the origin and continued use/meaning of a word in different languages. The word Gauche which means Tactless or lacing social grace is originally derived from the French word, Gauchir, which means warp or distort. This is a merging of two words from the Old French, Gauchier.
The word is a replacement of the original word for left, which is Senestre. So it can also be used as an adjective to refer to the left-hand side of something.