The word 'spinsterhood' is a compound formed from 'spinster' and the suffix '-hood'. Its core, 'spinster', originally denoted a woman whose occupation was spinning thread, a common and respectable employment for women in medieval households. By the 17th century, the term became a legal designation for an unmarried woman, as spinning was work single women often did, and it gradually acquired its modern connotation of an older, unmarried woman. The suffix '-hood', from Old English '-hād' (akin to 'condition'), attaches to nouns to form abstract nouns indicating a state or condition, thus 'spinsterhood' literally means "the state or condition of being a spinster."

Structure: spinster (unmarried woman) + hood (state or condition) spinster: From Middle English 'spinnestere' (a woman who spins), from Old English 'spinnan' (to spin) + the feminine agent suffix '-estere'. Origin: Germanic. hood: A noun-forming suffix from Old English '-hād', meaning state, condition, quality, or rank. Origin: Germanic.