Correct spelling for the English word "gallantr" is [ɡˈalantə], [ɡˈalantə], [ɡ_ˈa_l_a_n_t_ə] (IPA phonetic alphabet).
The term "gallantry" originated from the Old French word "galanterie", which emerged in the 14th century. It is derived from the word "galant", meaning "courteous" or "brave". In turn, "galant" can be traced back to the Late Latin word "galantes", meaning "smooth" or "kind". Over time, "galanterie" evolved to encompass the sense of chivalry, courteous behavior, and courteous attention towards women. Eventually, it entered the English language as "gallantry", maintaining its original meaning.