Prefixes

A prefix is placed at the beginning of a word to modify or change its meaning. Here are 7 common prefixes in English, together with their basic meaning and some examples.

1. counter-
   meaning: opposition, opposite direction
   example: counter-attack, counteract
2. extra-
   meaning: outside, beyond
   example: extracurricular, extramarital
3. hemi-
   meaning: half
   example: hemisphere
4. inter-
   meaning: between, among
   example: interact, interchange
5. non-
   meaning: absence, negation
   example: non-smoker, non-alcoholic
6. post-
   meaning: after in time or order
   example: postpone
7. re-
   meaning: again
   example: repaint, reappraise, reawaken