tresayle means A grandfather's grandfather; a great-great-grandfather. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why this word is great
TRESAYLE — [Noun] A grandfather’s grandfather; a great-great-grandfather. From Middle French trisayeul, from Latin tris, tres ("three") + Old French aïeul ("grandfather"). Unlike "grandfather," which anchors one in living memory, or "progenitor," which dissolves into biological generality, "tresayle" pinpoints a specific, arithmetical ghost in the bloodline. It is the sepia face in a locket with no known story, the signature on a brittle deed for land long since sold, the source of a surname that now feels more like fact than flesh—the quiet proof that we are merely the present tense of a long, forgetting sentence.
noun
- A grandfather's grandfather; a great-great-grandfather.“If the abatement happened on the death of one's grandfather or grandmother, then an assise of mort d'ancestor no longer lies, but a writ of ayle or de avo: if on the death of the great-grandfather or great-grandmother, then a writ of be sayle, or de proavo: but if it mounts one degree higher, to the tresayle, or grandfather's grandfather, of if the abatement happened upon the death of any collater”