Last letter = First Letter, min 3 syllable word chain

promenade

esplanade

Excalibur

resplendent

taciturn

nor’easter

-“BB”-

researcher

regimental

lackadaisical

lithomantic

carborundum

-“BB”-

monolith

hypocrite

Ecuador

Rastafari

Illini

Illinois

Stratocumulus

-“BB”-

solidus

sophomoric