hered

The root hered- comes from Latin hērēs (stem hērēd-), meaning 'heir' — the person who steps into a dead person's place and takes over their property, name, and obligations. Beside the noun stood the verb hērēditāre, 'to inherit,' and the noun hērēditās, 'inheritance.' Everything in this family circles one idea: something passes down from one generation to the next.

Important warning first: this root looks exactly like the other her- (from haerēre, 'to stick' — as in adhere, cohere, hesitate), but the two are unrelated. They were once filed together under the shared spelling 'her-'; here we split hered- (inheritance) out as its own root. A quick test: if it is about something being passed down, it is this root; if it is about sticking or clinging, it is the other one.

The family enters English by two doors. One door is Old French, which softened the Latin word and dropped the leading h-sound, giving heir — still spelled with a silent h today (you say 'air'). Around heir cluster the everyday words: heiress (a female heir, with -ess), heirship (the status of being an heir), coheir (co-, 'together' — a joint heir), and the vivid compound heirloom — an heir plus the old word loom ('tool, family possession'), i.e. a treasured object that travels down the bloodline.

The second door is straight Latin, keeping the fuller spelling herit-/hered-. The verb hērēditāre became inherit (in- here means 'into / to take on,' not 'not') — to take property or traits into your possession from a predecessor. From inherit grow inheritance (what is received), inheritor / inheritress (the one who receives), and the adjectives inheritable / heritable (able to be passed on). Reverse it with dis- ('away, opposite') and you get disinherit: to cut someone out of the line, to deny them what they would have received.

Then the meaning quietly widens. heritage was originally just 'property you inherit,' but it broadened from money and land to traditions, culture, and identity — a nation's heritage, a world heritage site. And the family reaches into biology: hereditary first meant 'passed down by family right' (a hereditary title, a hereditary monarchy), then was borrowed by science for traits passed down in the blood — a hereditary disease. heredity is the noun for that biological passing-on: the mechanism by which children inherit their parents' traits. So the same root that hands down a crown also hands down your grandmother's eyes.