aislar
to isolate (typically accent the i when conjugated, but not in the infinitive)
amputar
to amputate
ayudar
to help
bajar
to lower, to descend, to get out/off
bajar de peso
to lose weight
bofetear (Carib) cachetear (Mex)
to slap
buscar
to look for
cambiar
to change
caminar
to walk
causar
to cause
charlar (platicar in Mex)
to chat
chocar
to crash
chupar
to suck
consultar
to consult
circular
to cycle, to circulate
comprar
to buy
congelar
to freeze
contagiar
to become infected
contaminar
to contaminate
cortar
to cut
continuar
to continue
cuidar
to care for, to take careof
curar
to cure
dañar
to hurt, harm