The word 'wife' descends directly from the Old English 'wīf', which broadly meant "woman". This Old English term is of Germanic origin, related to Dutch 'wijf' and German 'Weib'. Its Proto-Indo-European root is likely gʷībʰ-, a form related to the concept of shame or modesty, reflecting ancient social perceptions. Over centuries, its meaning narrowed significantly from the general "woman" to specifically denote a married woman, illustrating a semantic shift from a general class to a specific relational role within marriage.

The word is a simplex form. It originates from the Old English 'wīf', meaning "woman, female, lady, wife". Its functional role is as a complete lexical root.