3 syllable words
penmanship
pen/man/ship
authorizing
author/izing
Unbelievable
un/believ/able
gingersnap
ginger/snap
counterclockwise
count/er/clock/wise
magnetic
magnet/ic
entertainment
entertain/ment
Incomparable
in/compar/able
invented
invent/ed
recommended
recommend/ed
Atlantic
At/lantic
inconsistent
in/consistent
Extraordinary
extra/ ordinary
expected
expect/ed
transatlantic
trans/atlant/ic
fantastic
fan/tastic
calisthenics
calis/then/ics
discrimination
dis/crim/in/ation/
investment
invest/ment
disinfectant
dis/infect/ant
Subtracting
sub/tract/ing
disenchantment
dis/enchant/ment
entrepreneurship
entre/pren/eur/ship
expanded
expand/ed
establishment
establish/ment