the 'c' changes to 'zc' if the conjugation gives the stem an 'a' or an 'o'
the 'c' changes to 'zc' if the conjugation gives the stem an 'a' or an 'o'
aborrecer - to abhor, to loathe
adolecer de - to suffer from
adormecerse - to nod off to sleep {student in library who didn't sleep night before}
agradecer - to thank
amanecer - to dawn
compareceer - to appear
aparecer - to appear, show up
crecer - to grow
decrecer - to decrease, to decline
desaparecer - to disappear
desfallecer - to be exhausted
desmerecer - to be unworthy, to lose value
desvanecer - to dissipate, to dispel
embravecer - to enrage
enaltecer - to praise
encallecer - to become calloused, to become hard
encanecer - to go grey
endurecer - to harden, to strengthen
engrandecer - to exalt, to increase, to enlarge
enloquecer - to drive mad
enmudecer - to silence
enrarecer - to pollute
enriquecer - to bring wealth to
enrojecer - to redden
fallecer - to die, to pass away
entorpecer - to hinder (movement)
entristecer - to make sad
envilecer - to debase
fortalecer - to strengthen
escarnecer - to mock, to ridicule
esclarecer - to clear up, to shed some light on
estremecer - to shake
fenecer - to pass away, to die
florecer - to flower, to flourish
guarecer - to protect
humedecir - to moisten
oscurecer - to darken, to overshadow
palidecer - to turn pale
prevalecer - to prevail
conocer - to know
lucir - to shine