7 letters · 11 points in Scrabble
adjective relating to or caused by or afflicted with sciatica
adjective of or relating to the ischium (or the part of the hipbone containing it)
originBorrowed from Middle French sciatique, from Late Latin sciaticus, variant of ischiadicus, from Ancient Greek ἰσχιαδικός (iskhiadikós), the adjective of ἰσχίον (iskhíon, “hip”).
Etymology from Wiktionary, CC BY-SA 3.0