Negative Prefixes: DIS, IM, IN, IR, IL, NON, UN.

• Disappointment

E.g.  He found it difficult to hide his disappointment when she didn't arrive.

• Disapproval

E.g. He shook his head in disapproval.

• Disgust

E.g. She expressed her disgust at the programme by writing a letter of complaint.

• Disrespect

E.g. No disrespect intended, sir. It was just a joke.

• Disbelief

E.g. He stared at me in disbelief.

• Disgrace

E.g. Her behaviour has brought disgrace on her family.

• Dishonour

E.g. There is no dishonour in such a defeat.

• Disillusionment

E.g. There is widespread disillusionment with the present government.

• Disinterest

E.g. His total disinterest in money puzzled his family.

• Dismay

E.g. He looked at her in dismay.

• Displeasure

E.g. She made no attempt to hide her displeasure at the prospect.

• Disregard

E.g. The board completely disregarded my recommendations.

• Dissatisfaction

E.g. Many people have expressed their dissatisfaction with the arrangement.

• Distaste

E.g. He looked around the filthy room in distaste.

• Distrust

E.g. He has a deep distrust of all modern technology.

• Discomfort

E.g. You will experience some minor discomfort during the treatment.

• Discontent

E.g. There is widespread discontent among the staff at the proposed changes to pay and conditions.

• Discouragement

E.g. Despite all these discouragements, she refused to give up.

• Disdain

E.g. He turned his head away in disdain

• Unreal

E.g. The party began to take on an unreal, almost nightmarish quality.

• Unable

E.g. I tried to contact him but was unable to.

• Unusual

E.g. It's unusual for the trees to flower so early.

• Unhappy

E.g. I didn't realize but he was deeply unhappy at that time.

• Unfaithful

E.g. She remained loyal to her unfaithful husband.

• Unfair

E.g. It would be unfair not to let you have a choice.

• Unprepared

E.g. She was totally unprepared for his response.

• Unhelpful

E.g. The taxi driver was being very unhelpful.

• Unlikely

E.g. The project seemed unlikely to succeed.

• Unshaven

E.g. He looked pale and unshaven.

• Incorrect

E.g. The time on my clock is incorrect.

• Incredible

E.g. It seemed incredible that she had been there a week already.

• Invalid

E.g. People with invalid papers are deported to another country.

• Insane

E.g. The prisoners were slowly going insane.

• Infrequent

E.g. Muggings are relatively infrequent in this area.

• Incapable

E.g. The children seem to be totally incapable of working by themselves.

• Inexpensive

E.g. Inexpensive socks fade faster than pricey ones.

• Ineligible

E.g. The new rules have made thousands more people ineligible for legal aid.

• Inorganic

E.g. Rocks and minerals are inorganic.

• Indecent

E.g. He made an indecent suggestion to my wife

• Invisible

E.g. The gas in a balloon is invisible

• Informal

E.g. We can wear jeans to an informal party

• Independent

E.g. She is proud to be independent in her job.

• Inactive

E.g. It’s hard to exercise after being inactive for a week.

• Inappropriate

E.g. Casual clothes are inappropriate at a wedding.

• Indefinite

E.g. Rain delayed the game for an indefinite period.

• Indisputable

E.g. It is indisputable that Austin is the capital of Texas.

• Illegal

E.g. It's illegal to drive through a red light.

• Illegible

E.g. His signature is totally illegible.

• Illogical

E.g. His answer is illogical; it makes no sense.

Impolite

E.g. It’s impolite to interrupt a person who is speaking.

• Imperfect

E.g. All our sale items are slightly imperfect.

• Immoral

E.g. It's immoral to steal.

• Impure

E.g. Some of these drugs are highly impure.

• Impossible

E.g. It's impossible to prove.

• Impatient

E.g. He was too impatient to wait in line for the bus

• Immobile

E.g. The ship was immobile after grounding on a reef.

• Imbalance

E.g. Postnatal depression is usually due to hormonal imbalance.

• Impeccable

E.g. He was dressed in a suit and an impeccable white shirt.

• Immature

E.g. She is too immature to take a babysitting job.

• Impersonal

E.g. A robot is an impersonal teacher.

• Irrational

E.g. There was nothing inherently irrational in such a decision.

• Irregular

E.g. The shirt was on sale because of irregular stitches

• Irresistible

E.g. My father’s homemade apple pie is irresistible

• Irrelevant

E.g. Music skills are irrelevant in playing baseball.

• Irresponsible

E.g. It is irresponsible to run into traffic.

• Irreparable

E.g. My report is irreparable after my dog chewed it.

• Nonessential

E.g. I have no money for non-essentials.

• Nonfiction

E.g. I prefer reading non-fiction.

• Nonsense

E.g. You're talking nonsense!