Gwaethu, v. to make worse
Gwaethwaeth, worse and worse
Gwaethwg, n. impaired state
Gwaethygiad, n. an impairing
Gwaethygu, v. to impair
Gwaew, n. pang, pain, agony, spasm; a lance
Gwaewffon, n. a javelin
Gwag, n. avoid, a vacuum, a void, empty, vacant
Gwagder, n. emptiness
Gwagedd, n. emptiness, vanity