dis-
not, none
disadvantage
an unfavorable situation that is not good.
disagreement
a quarrel; not able to come to an agreement; not of the same opinion
disappoint
to let someone down; to not make someone proud or satisfied
discontinue
to end something; to not use anymore; cease
dismal
no good; depressing; dreary; bleak
disobedient
not following the rules
disorganized
mess; not neat; not able to find things
disposable
not worthy of being kept; easily kept; easily given or thrown away; able to be easily replaced
disrespectful
not polite; rude; not courteous
disturb
to bother or pester; not leaving someone alone
un-
not, none
uncertain
not sure
uncommon
rare; not the usual; remarkable
unconscious
not within thought; not awake
undecided
not yet at the point of making a decision
unexpected
not what someone thought would happen; not predicted
unmistakable
clear; cannot be understood the wrong way; not able to be confused or misunderstood
unnecessary
not required
untidy
messy; not neat; not organized
unwise
not smart
unworthy
not deserving; not having any values