This document discusses negative prefixes in English including dis-, il-, im-, in-, ir-, and un-. These prefixes are used to form words with negative or opposite meanings such as dislike, illegal, impossible, inexpensive, irrational, and unfortunately.

1. NEGATIVE PREFIXES
DIS-: dislike, disconnect, dishonest, disagree
IL-: illegal(ly), illegible, illogical
IM-: imperfection, imposible, impatient
IN-: incredible, inexpensive(ly), inexperienced
IR-: irresponsible(bly), irrational
UN-: unusual, unable, unhealthy, unfortunately