A loud talk or speech is never impressive.

A. Magniloquence

B. Harangue

C. Erudition

D. Malevolence

Answer: Option B

Solution(By Examveda Team)

One word substitute is Harangue.

Magniloquence: use of high-flown language.
Harangue: a lengthy and aggressive speech.
Erudition: the quality of having or showing great knowledge or learning; scholarship.
Malevolence: the state or condition of being malevolent; hostility.