Root words (prefixes)

• a-, ab-, abs-

  meaning: away from

  ex: absent
• ad-, a-, ac-, af-, ag-, an-, ar-, as-

  Meaning: to towards

  ex: advance, adhere
• bi-, bis-

  meaning: two

  ex: biped,bisect
• circum-

  meaning: around

  ex: circumference
• com-, con

  meaning: together, with

  ex: connect, communicate
• de-

  meaning: opposite, away, from

  ex: detract, defer
• dis-,dif-,di-

  meaning: apart, not

  ex: disperse, different
• epi-

  meaning: upon, on top of

  ex: epicenter, epidermis
• equi-

  meaning: equal

  ex: equality, equitable
• ex-, e-

  meaning: out, from, forth

  ex: exhale, exit, eject
• hyper-

  meaning: over above

  ex: hypersensitive
• hypo-

  meaning: under, beneath

  ex: hypodermic, hypothermia
• in-

  meaning: in, into, not

  ex: inject, endure, incorrect
• inter-

  meaning: between, ongoing

  ex: intercede
• mal-, male-

  meaning: bad, ill

  ex: malpractice, malevolent
• mis-

  meaning: wrong

  ex: mistake, misunderstand
• mono-

  meaning: alone single, one

  ex: monotone,monopoly
• non-

  meaning: not

  ex: nonsense
• ob-

  meaning: in front of, against

  ex: obvious
• omni-

  meaning: everywhere, all

  ex: omnipresent
• pre-

  meaning: before

  ex: prehistoric
• pro-

  meaning: forward

  ex: -promote, proceed
• re-

  meaning: back, again

  ex: review, recall
• retro-

  meaning: backward, back, behind

  ex: retroactive
• se-

  meaning: apart

  ex: secede
• sub-

  meaning: under

  ex: subway
• super-

  meaning: greater, beyond

  ex: supernatural, superstition
• trans-

  meaning: across, beyond

  ex: transcend, transcontinental
• un-,uni-

  meaning: one

  ex: unity, unilateral
• un-

  meaning: not

  ex: unethical