3 syllable words
penmanship
pen*man*ship
authorizing
au*thor*i*zing
emphasis
emp*pha*sis
gingersnap
gin*ger*snap
counterclockwise
count*er*clock*wise
magnetic
mag*net*ic
entertainment
ent*er*tain*ment
volcanic
vol*can*ic
invented
in*vent*ed
recommended
rec*om*mend*ed
Atlantic
At*lan*tic
inconsistent
in*con*sis*tent
invalid
in*val*id
expected
ex*pect*ed
transatlantic
trans*at*lan*tic
fantastic
fan*tas*tic
calisthenics
cal*is*then*ics
disinfect
dis*in*fect
investment
in*vest*ment
disinfectant
dis*in*fect*ant
subtracting
sub*tract*ing
disenchantment
dis*en*chant*ment
insistent
in*sis*tent
expanded
ex*pand*ed
establishment
es*tab*lish*ment