capacious

Etymology

From Latin capāx (“capable”) + -ious. Displaced native Old English numol.

adj

1. Having a lot of space inside; roomy.
   The Malabar, that huge sea monster, in whose capacious belly so many human creatures lived and suffered, had dwindled to a walnut-shell, and yet beside her bulk how infinitely small had their own frail cockboat appeared as they shot out from under her towering stern! 1874, Marcus Clarke, chapter V, in For the Term of His Natural Life
   “Do I fidget you ?” he asked apologetically, whilst his long bony fingers buried themselves, string, knots, and all, into the capacious pockets of his magnificent tweed ulster. 1905, Baroness Emmuska Orczy, chapter 1, in The Case of Miss Elliott