---

All answers having "Ages and ages" as clue:

3 Character Answers:

---

AEO

EON

RHO



4 Character Answers:

---

AEON

EONS



5 Character Answers:

---

AEONS

EPOCH



8 Character Answers:

---

ETERNITY



12 Character Answers:

---

DONKEYSYEARS



15 Character Answers:

---

AMONTHOFSUNDAYS