Negative prefixes
Some clues for the negative word formation in English (specially useful for the word-formation exercise!!) "a-" For words from a Greek origin: theist / atheist, chromatic / achomatic, rhythmic / arhythmic, symmetry / asymmetry or medical and scientific origin: apnea, anemia, apraxia, amitosis "non-" Usually with nouns: partisan / nonpartisan, sectarian / nonsectarian, violence / nonviolence, standard / nonstandard, compliance / noncompliance, proliferation / nonproliferation, sense / nonsense "in-", "im-" (before "m", "p", and "b"), "il-" (before "l") and "ir-" (before "r") For words from a Latin: articulate / inarticulate , polite / impolite, possible / impossible, modest / immodest, legal / illegal, reverent / irreverent, regular / irregular, sanity / insanity "dis-" Used to create a negative state or the absence of something, it may imply an ac...