11 letters · 13 points in Scrabble
adjective fairly large
adjective having a firm basis in reality and being therefore important, meaningful, or considerable
adjective having substance or capable of being treated as fact; not imaginary; ; ; - Shakespeare
originFrom Middle English substancial, substantiall, from Old French substanciel, substantiel and its etymon Latin substantiālis.
Etymology from Wiktionary, CC BY-SA 3.0