Adding -ian
history
historian
pretty
prettier
accurate
accurately
digest
digesting
adore
adorable
music
musician
act
actor
easy
easily
divide
dividing
fix
fixable
comedy
comedian
narrate
narrator
playful
playfully
drip
dripping
sense
sensible
civil
civilian
meaty
meatier
suitable
suitably
hurry
hurrying
flex
flexible
electric
electrician
calculate
calculator
tardy
tardily
ice
icing
describe
describable