(bad)

malevolent

malcontent

(bad)

misfit

mistake

(not)

nonstop

nonprofit

(after)

postgraduate

postlude

pre

(before)

prelude

preposition

(half)

semiweekly

semistone

(under)

subtract

usbmarine

(over)

supervise

superb

syn

(together)

synthetic

syntax

(together)

sympathy

symbol

(three)

triangel

triad

(not)

unfit

untenable

(before)

antedate

ante

(aganist)

antiaircraft

antibody

(two)

bicycle

binary

(around)

cirumnavigate

cirumspect