Un
Unbearable
You cannot bear something
Prealgebra
Before algebra
misguided
guided incorrectly
rearrange
arrange again
antibullying
not bullying
Unfazed
It doesn't bother you
Preseason
Before the season
misprint
to print incorrectly
reconsider
consider again
antisocial
not social
Unreliable
You can't rely on it/them
Precaution
Something you do to prevent something else from happening
Misprescribed
prescribed wrongly
repeat
do something again
antifun
not fun
Unimportant
not important
Preschool
Before school
Mistaken
took something wrong
recall
try to remember
antihero
not a hero
Untidy
Not tidy
Predetermined
misbehave
behave poorly
reveal
Show something to someone
antifreeze
not freeze