reduce
ri-DOOS 
<English<Latin
to lessen
ratio
RAY-shee-oh 
<Latin
a fixed numerical relation between two things
skydiving
SKY-dy-ving 
<English<Old Norse + <English
parachute jumping involving free-fall maneuvers
adamant
AD-uh-muhnt 
<English<French<Latin
inflexible; unyielding
synopsis
suh-NAWP-suhs 
<Latin<Greek
a general review, condensation or summary
prodigal
PRAWD-uh-guhl 
<Latin
exceedingly or recklessly wasteful
exacerbate
ig-ZAS-uhr-bayt 
<Latin
to make worse or more severe
terrapin
TER-uh-puhn 
<Algonquian
an aquatic turtle native to North America
aristoi
ER-uh-stoi 
<Greek
aristocrats
sustentacular
suhs-tuhn-TAK-yuh-luhr 
<Latin + Ecf
serving to support or sustain