Common Suffixes
ible/able
ex: capable, unable, digestible, lovable
"Can be done"
"likely to"
accidental
-al
having the characteristics of being an accident
pre-
ex: precede, prewar
"before"
oct
ex: octagon
"eight"
monotone
mono
"one color" or "one tone"
-al/-ial
ex: historical, comical
"having characteristics of"
edible
ible
able to be eaten
inter-
ex: interstate
"between" or "among"
mono
ex: monorail
"one"
trilogy
tri
"a series of three"
-y
ex: breezy, gloomy
"having characteristics of"
political
-al
relating to the government
fore-
ex: forecast, forefront
"before" or "ahead of time"
tri
ex: tricycle
"three"
Octogonal
"oct"
"having eight straight sides and eight angles"
-ness
ex: happiness, forgetfulness
"state of"
"condition of"
legible
-ible
able to be read
de-
ex: decode, defrost
"opposite of" or "undo"
pent
ex: pentagon
"five"
pentagram
"five-pointed star polygon" aka star