unclear

amount or degree over time

worsen

lessening

complex

closeness

by using the criterion of

a collection of things that fit together

disease or weakness

inhaling

a disease of the throat

to force air, water, gas, etc., out of something

conform to another's actions

having an extremely important effect on the way something develops

to provide information that supports or helps prove someone else's statement, idea, etc.

a tendency to behave in a particular way or like a particular thing, especially something bad

to reduce the pain or trouble of something: to make something less painful, difficult, or severe

being kept within the limits of a small area

a dense metal, chemical symbol Pb

present in a given area because of natural causes, not because of human actions

a perfume or other substance meant to make something smell good

a substance meant to kill insects or other unwanted animals

any one of the six chemical elements that are gases at room temperature and almost never react with other chemicals

very old, no longer important

in the style of ancient Greece or Rome, but produced long afterwards

given human characteristics, even though it is not human

most importantly

social or cultural environment

similar to him

relating to ceremonies for the dead

be stronger than sth else

the practice of burning a dead body

find something accidentally

reject, decide not to do

to express doubts about something

relating to beauty and the study of beauty

a period of history, especially one in which important events take place

the scientific study of metals and their uses

imagined rather than based on facts

from the past, but not portrayed exactly as they really were

not interesting or exciting, boring, unemotional

differing from each other or from a standard

go down

coming between two other stages, levels, etc.

be excused from; be allowed to avoid

sin or wrongdoing

follow, proceed in agreement with a system or set of rules

to die or suffer badly from an illness

a question that has a surprising or amusing answer, or something that is a mystery or is hard to explain

A group of similar cells that perform a specific function.

the process or period of time in which harmful bacteria or viruses increase in size or number in a person's or animal's body but do not yet produce the effects of disease

to turn or twist

reproduce, to produce young plants or animals

the hierarchical system in which larger animals and plants eat smaller ones

to reside in a certain place without being active

improperly aggressive action beyond one's area of responsibility

the internal organs and tissues of an animal

a situation in which a former mystery or problem has been resolved

effectively improving health

a doctor's opinion of how an illness or disease will develop

having the shape or form of a curve that goes around a central tube or cone shape in the form of a spiral

any substance that can cause cancer

depending on something that may or may not happen in the future

to try to find more information about someone or something

very serious and dangerous; tending or likely to grow and spread in a rapid and uncontrolled way that can cause death

the number of times something happens, especially something bad

to make or become widely known or evident

to become the focus of everyone's attention

incorrect, especially because it has been affected by a particular thing or because you do not know all the facts

a personal or private reason for wanting something to happen

unrealistically large or small

to get inside something through hard-to-see entry points

an important new discovery in something you are studying, especially one made after trying for a long time

to be included in (a category)

connection or obedience

tending to favor one thing over others

unsettled

to make sth livelier and stronger

multiple; existing in number more than about 24

sth which is very old and out of step with modern standards

to cause something or put it in motion quickly through strong action

the loss of an economy's smartest people

to focus efforts on taking advantage of a specific resource

to want or to have or experience somthing pleasurable, as a matter of habit

trying to do the right thing, but not really knowing how

happen at the same time as something else, especially by chance

to fail by slowly losing strength

actually in place or valid at a given time; oftern refers to a rule or law

to float in the air; usually refers to a gas, smell or sound

disparity in earning; the unequal distribution of income

considering

not moving

to follow or monitor the condition of

to take, set an upper limit

most important, of great importance

to speak puplicly

to make somebody feel that they do not belong in a particular group

nothing or zero

Give someone a task or responsibility that is difficult or hard work.

to excite or arouse action

to kill in a violent way

to put someone in prison

confident and hopeful

more important, more successful or of a higher standard than others

a set of principles or goals

in speeches

portraying; picturing

to cause to grow and develop

(v) to stop accepting a person as a member of a group

a relationship or similarity between 2 things, especially things that exist or happen in different places or at different times

to make someone suffer something bad or painful

to try to do something or behave in the same way as someone else, especially because you admire him or her

a bad, serious, or sad condition or situation

to praise someone or something

completely unacceptable or morally wrong

action that is take in order to deal more strictly with a problem

affecting many things, or making an important difference to things

support for a plan, person, group

very careful about small details, making sure that everything is done correctly

to stop opposing someone or something that is stronger than you, and allow that person or thing to take control