Last letter = First Letter, min 3 syllable word chain

grandiose

exaggerate

expeditio
(in rhetoric, a form of argument that lists a number of options or alternatives, and then rejects them all but the one desired by the orator)

-“BB”-

ornithography

Yog-Sothoth

hamadryad

deodar

radical

lothario

Odenkirk

kerfuffle

-“BB”-

egalitarian

nutrient

tendencies

susceptive

Enterprise

epidural

latency

yttrium

mercurial