Prefixes that mean "no": a- de- dis-, in- non- un-, contra

Examples: disqualify, nondescript, unscrupulous, contradict, inadvertent

Prefix	Meaning	Examples
a-, an-	without, not	asexual, atypical, amoral, anarchy
de-	reverse action, away	defrost, demystify, desensitize, deduct
dis-, dif-, di-	not, apart	dissatisfied, disorganized, different, divert
in-, il-, it-, im-	not	inappropriate, invisible, illegal, impossible
non-	not	nonproductive, nonessential, nonsense
un-	not	unlikely, unnoticeable, unreliable
contra-, counter-	against	contrary, contradict, counterproductive

desentisize - Make less sensitive