Last letter = First Letter, min 3 syllable word chain

insipid

diaspora

abacisci

irascible

elucidating

geosynchronous

-“BB”-

scholasticism

metronome

endodontist

thecodont

trapezium

melodica

amicable

Esthetician

-“BB”-

Narragansett

Terlingua

appoggiatura

arugula

antipasto

Orientalism