The word "老婆" is formed from the character "老", which literally means "old", and "婆", which means "woman" or "wife". Here, "老" functions as an affectionate prefix that conveys familiarity and endearment rather than indicating age, while "婆" denotes the female spouse. Combined, these characters create a compound term that specifically means "wife", evolving from historical colloquial use into standard modern usage.