dis-
not interested
disinterested
temperature lower than zero
subzero
to remove frost
defrost
owned before
preowned
spell incorrectly
misspell
does not make sense
nonsense
apart from the usual location
dislocate
below par
subpar
take bark off a tree
debark
already washed
prewashed
behave poorly
misbehave
without stopping
nonstop
without order
disorder
underwater boat
submarine
not caffeinated
decaffeinated
already paid
prepaid
give incorrect information
misinform
not for profit
nonprofit
not similar
dissimilar
take away
subtract
opposite of accelerate
decelerate
get ready
prepare
calculate incorrectly
miscalculate
not specific
nonspecific
here and then not
disappear
below the earth
subterranean
to become rotten or decay
decompose
keep something from happening
prevent
make an error
mistake
does not speak
nonverbal