a b c d e f g h i j k l m n o p q r s t u v w x y z

Uu

ugly
adjective

unpleasant to look at.
N say ug-lee
ugliness noun

ulcer
ulcers noun
a sore patch on your skin
or in your stomach.
N say ul-ser

umbrella
umbrellas noun
a covered frame, held up
by a stick that is used to
protect a person from
the rain, or as a shade from
the sun. Umbrella frames are
covered with cloth or plastic
and can be folded
up when not in use.

umpire
umpires noun
someone who makes sure
that players follow the rules
of a game or sport.
umpire verb

unanimous
adjective

agreed by everyone.
The leader was elected
by a unanimous vote.
N say yoo-nan-uh-mus

uncle

uncles noun

the brother of someone’s

parent, or their

aunt’s husband.

uncomfortable

adjective

1 not able to relax.

She was too uncomfortable

to go to sleep.

2 causing an unpleasant

feeling or slight pain.

Uncomfortable shoes.

N opposite comfortable

unconscious

adjective

1 not able to think and feel,

possibly because of an illness

or accident.

The falling brick knocked

him unconscious.

2 done without thinking.

He has an unconscious habit

of scratching his chin.

N say un-kon-shus

N opposite conscious

under

preposition

below or beneath

something, or to

a lower place.

She is holding

the ball under

her arm.

undercover

adjective

done in secret to obtain

information.

The police were working on

an undercover investigation.

underdone

adjective

not cooked for long enough.

underground

adjective

below the ground.

An underground cave.

underground adverb

underline

underlines underlining

underlined verb

to draw a line under

something, usually to

stress it or to show that

it is important.

underneath

preposition

below something, or in

a lower place.

The children played

underneath the table.

underneath adverb

understand

understands understanding

understood verb

to know what

something means.

Did you understand

the question?

understudy

understudies noun

a person who learns a part

in a play or performance so

that he or she can take over if

the usual actor cannot perform.

understudy verb

underwater

adjective

found under the surface

of the water, or used under

the surface of the water.

The diver swam among

the underwater plants

and animals.

underwater adverb

underwater

uncover

uncovers uncovering

uncovered verb

to remove the cover, unwrap,

or reveal something.

The archeologists uncovered

a Roman mosaic.