---

All answers having "Gruesome" as clue:

3 Character Answers:

---

MAW

MAY



4 Character Answers:

---

GORY



5 Character Answers:

---

ERECT

LURID

MIMIC

PRIDE



6 Character Answers:

---

GRISLY

MORBID

THIRST



7 Character Answers:

---

GHASTLY

MACABRE

REMORSE

VEHICLE



8 Character Answers:

---

GHOULISH