In (French en), in: inborn, illusion, import, irruption; encase, enclose; entwine, embody, employ; enable = to make able, embitter.
Off or of, off, from: offal = what falls off, offspring.
On, against, towards: onset, onslaught, onward.
Out has a sense of direction or surpassing, (beyond): outcast, outpost, outrun, outshine; utter, utmost (i.e., outer, outmost).
Over, over, above: overhead, overcoat, overturn, overspread, over-bold.
Through = thorough: throughout, thoroughfare, thoroughbred, through-ticket.
Twi, two, double: twice, twilight = double or doubtful light, twill, twin = double, twine, twist = two strands twisted.
Under, below, lower: underhand, underlie, underneath, undertone.
Up, up: upland, upshot, upbraid, uphold, uprise, upward.