Monopoly
One
Mono
two
after
Post
the study of
-ology
able to
-able
Many
Poly
three
Tri
before
Pre
fear of
-phobia
without
-less
fear of being alone
Monophobia
four
Quad
to do something at a time or date after it was originally scheduled
Postpone
the fear of water
hydrophobia
open to discussion or agrument
Debatable
having many different colors
Polychromatic
one of a kind; unusual; rare
Unique
to pay for something before in needs to be paid in full
Prepay
the study of the mind
Psychology
not afraid; without fear
Fearless
a track for train cars that only has one rail
Monorail
able to speak three languages
Trilingual
a comment or note written after the letter has finished
Postscript; P.S.
the fear of heights
Acrophobia
able to be carried from one place to another
Portable