---

All answers having "Formal speech" as clue:

3 Character Answers:

---

EWE

OAK



4 Character Answers:

---

IDOL

ONUS

THUG



5 Character Answers:

---

SPECK



6 Character Answers:

---

COLLIE

FERVID

SCORCH



7 Character Answers:

---

ADDRESS

BYWAYOF

ORATION



8 Character Answers:

---

FOREBEAR

RELATIVE



9 Character Answers:

---

SYNTHETIC