Horrible to Look At, Repulsive, Unsightly
This page is the CodyCross answer for the clue below from Space Exploration, Group 906, Puzzle 5 (Edmond Halley).
Question is: Horrible to Look At, Repulsive, Unsightly
and the answer is: HIDEOUS
Word Meaning:
HIDEOUS — Extremely or shockingly ugly.
Definitions from Wiktionary.