7 letters · 10 points in Scrabble
noun a person who is entitled by law or by the terms of a will to inherit the estate of another
originFrom Middle English heriter, from Anglo-Norman heriter, Old French heritier, earlier eretier, eritier, from Late Latin hērēditārium (from the adjective hērēditārius (“hereditary”)), which took the place of hērēs (“heir”). In the 16th century conformed to agent nouns in -our, -or. By surface analysis, herit + -or.
Etymology from Wiktionary, CC BY-SA 3.0