-able/-ible
able to be (readable, visible)
-al/-ial
related to (personal, partial)
-ance/-ence
state, quality (resistance, persistence)
-ant/-ent
one who, inclined to (student, dependent)
-er/-or
one who (teacher, actor)
-ful
full of (joyful, careful)
-ic
relating to (historic, poetic)
-ism
belief, practice (optimism, realism)
-ist
one who practices (artist, scientist)
-ity/-ty
state, quality (clarity, certainty)
-less
without (hopeless, fearless)
-logy
study of (biology, psychology)
-ous/-eous/-ious
full of, characterized by (curious, courageous)
-tion/-sion
act, process (completion, tension)