English Thesaurus

Synonyms of 'important'

(adjective) 
Definition
of great significance, value, or consequence
an important economic challenge to the government
Synonyms
significant
It is the first drug that seems to have a significant effect on this disease.
,
critical
The incident happened at a critical point in the campaign.
,
substantial
That is a very substantial improvement in the current situation.
,
grave
He says the situation in his country is very grave.
,
urgent
There is an urgent need for food and water.
,
serious
I regard this as a serious matter.
,
material
The company failed to disclose material information.
, , ,
meaningful
a meaningful and constructive dialogue
,
far-reaching
far-reaching reforms on human rights
,
momentous
the momentous decision to send in the troops
, ,
weighty
Surely such weighty matters merit a higher level of debate?
,
of substance
,
salient
She read the salient facts quickly.
,
Opposites
(adjective) 
Definition
of great significance, value, or consequence
Her sons are the most important thing in her life.
Synonyms
valued
a valued member of the team
,
loved
,
prized
his most prized possession
,
dear
Mrs Cavendish is a dear friend of mine.
, ,
valuable
She was a valuable friend and an excellent teacher.
,
of interest
,
treasured
,
precious
her most precious possession
,
esteemed
,
cherished
,
of concern
,
highly regarded
(adjective) 
Definition
of social significance
an important figure in the media world
Synonyms
powerful
You're a powerful woman – people will listen to you.
,
leading
Britain's future as a leading industrial nation depends on investment.
,
prominent
a prominent member of the Law Society
, , ,
outstanding
an outstanding tennis player
,
high-level
,
dominant
controlled by the dominant class
,
influential
one of the most influential books ever written
,
notable
the notable occultist, Madame Blavatsky
,
big-time (informal)
, ,
eminent
an eminent public figure
,
high-ranking
, ,
major league (informal)
,
of note
,
noteworthy
None of these buildings are noteworthy for their architecture.
, ,
skookum (Canadian)
(adjective) 
Definition
of great significance, value, or consequence
The important thing is that you rest.
Synonyms
main
My main concern now is to protect the children.
,
major
Exercise has a major part to play in maintaining your health.
,
chief
Financial stress is acknowledged as a chief reason for divorce.
The job went to one of his chief rivals.
,
head
I had the head man out from the gas company.
,
prime
Political stability is a prime concern.
,
central
a central part of government policy
,
necessary
Is your journey really necessary?
Please make all the necessary arrangements.
,
basic
shortages of even the most basic foodstuffs
,
essential
It is absolutely essential that we find this man quickly.
,
premier
the country's premier opera company
,
primary
the primary cause of the disease
,
vital
a blockade which could cut off vital oil and gas supplies
, ,
crucial (informal)
the most crucial election campaign in years
,
supreme
He proposes to make himself the supreme overlord.
,
principal
Their principal concern is that of winning the next election.
,
paramount
The welfare of the children must be of paramount importance.
,
foremost
He was one of the world's foremost scholars.
,
pre-eminent
He is the pre-eminent political figure in the country.

Additional synonyms

in the sense of basic
Definition
of or forming a base or basis
shortages of even the most basic foodstuffs
in the sense of central
Definition
main or principal
a central part of government policy
in the sense of chief
Financial stress is acknowledged as a chief reason for divorce.The job went to one of his chief rivals.
Synonyms
highest,
key,
most important,
big-time (informal),
major league (informal),

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Video: pronunciation of 'important'

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Thesaurus for important from the Collins English Thesaurus
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