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not accepted or approved by a person in authority Unofficial reports say that four people died in the explosion.

—ANTONYM official

un • of • fi • cial • ly / |Ans ' fifsli / adverb

un • pack / |An ' prek / verb ( un - packs,un - pack ing ,un - packed )

to take all the things out of a bag, box, etc. Have you unpacked your suitcase?

We arrived at the hotel, unpacked, and then went to the beach. —ANTONYM pack

un • paid / | An peid / adjective

not yet paid unpaid bills

un .pleas .ant © / An pleznt / adjective

not pleasant; not nice

There was an unpleasant smell of bad fish.

—ANTONYM pleasant

► un • pleas • ant • ly / An' plezntli / adverb It was unpleasantly hot in that room. —ANTONYM pleasantly

un • plug / |An ' plAg / verb ( un - plugs , un - plug ging , un plugged )

to take out a piece of electrical equipment (called a plug ) from the electricity supply Can you unplug the TV, please?

—ANTONYM plug something in

un • pop • u • lar / |An ' papyslsr / adjective

not liked by many people; not popular He's unpopular at work because he's lazy.

—ANTONYM popular

un • pre • dict • a • ble |awL / |Anpri 'diktsbi /

adjective

If something is unpredictable , you cannot say how it will change in the future

The weather is very unpredictable at this time of year. —ANTONYM predictable

un • pro • fes • sion • al / |Anprs 'fejsnl /

adjective

not behaving in way that is appropriate for a person in a particular job

Criticizing her client like that was really unprofessional. —ANTONYM professional

un • qual • i • fied / An' kwalsfaid / adjective

not having the knowledge or training to do something She is totally unqualified for this job.

—ANTONYM qualified

un • rea • son • a • ble / An'rizn-sbl /

adjective

expecting too much

an unreasonable request —ANTONYM reasonable

un •re • li •a • ble |awL / |Anri laisbl /

adjective

If something or someone is unreliable , you cannot trust it or them

Don't lend her any money — she's very unreliable. an unreliable car —ANTONYM reliable

un • rest / |An' rest / noun [ noncount ]

a situation in which people are angry or unhappy, and are likely to protest or fight

There has been a lot of political unrest since the last election.

un • ru • ly / An ' ruli / adjective

difficult to control an unruly crowd

un • safe / An seif / adjective

dangerous; not safe

Don't climb on that wall — it's unsafe.

—ANTONYM safe

un • sat • is • fac • to • ry / ,Ansretas ' frektari / adjective

not good enough; not acceptable

Your work is unsatisfactory. Please do it again.

—ANTONYM satisfactory

un • screw / ,лп ' skru / verb ( un - screws , un - screw ing , un - screwed )

to open or remove something by turning it Could you unscrew the top of this jar for me?

un • skilled / iAn skild / adjective

not having or needing special skills or training unskilled workers unskilled jobs

—ANTONYM skilled

un • sta • bleaw / ,лп' steibl / e

Something that is unstable may fall, move, or change This bridge is unstable. an unstable government