Last letter = First Letter, min 3 syllable word chain

nonchalant

turbulent

tenacity

yeomanhood

denouement

tintinnnabulation

necessitudinarian

neurotransmitter

raconteur

Rialto

oregano

overlap

pterodactyl

languorous

simultanagnosia

algolagnia

acetaminophen

nystagmus

sententiousness

Sagittarius