re-
Meaning: again or back Example: restructure, revisit, reappear, rebuild, refinance
dis-
Meaning: reverses the meaning of the verb Example: disappear, disallow, disarm, disconnect, discontinue
over-
Meaning: too much Example: overbook, oversleep, overwork
un-
Meaning: reverses the meaning of the verb Example: unbend, uncouple, unfasten
mis-
Meaning: badly or wrongly Example: mislead, misinform, misidentify
out-
Meaning: more or better than others Example: outperform, outbid
be-
Meaning: make or cause Example: befriend, belittle
co-
Meaning: together Example: co-exist, co-operate, co-own
de-
Meaning: do the opposite of devalue, deselect
fore-
Meaning: earlier, before Example: foreclose, foresee
inter-
Meaning: between Example: interact, intermix, interface
pre-
Meaning: before Example: pre-expose, prejudge, pretest
sub-
Meaning: under/below Example: subcontract, subdivide
trans-
Meaning: across, over Example: transform, transcribe, transplant
under-
Meaning: not enough Example: underfund, undersell, undervalue, underdeveloped