noun
1 where you get sth from
ADJECTIVE
▪ excellent , fertile , good , great , lucrative , reliable , rich , valuable
▪
a fertile ~ of ideas
▪
a lucrative ~ of income
▪
a rich ~ of vitamins
▪ important , large , main , major , principal
▪ cheap
▪
a cheap ~ of protein
▪ external , foreign , outside
▪
Do you have any foreign ~s of income?
▪ independent
▪
an independent ~ of funding
▪ only , single
▪
The only ~ of light was the fire.
▪ additional , alternative , different , new , other
▪
We need to look for alternative ~s of energy.
▪
to develop new ~s of revenue
▪ same
▪ likely , potential
▪
a potential ~ of conflict
▪ unexpected
▪ constant
▪
a constant ~ of irritation
▪ natural
▪ renewable , sustainable
▪
The town obtains all its energy from renewable ~s.
▪ energy , food , fuel , heat , light , power , protein , water
▪ funding , revenue
VERB + SOURCE
▪ be , constitute , prove , provide
▪
The census constitutes the principal ~ of official statistics.
▪
These crustaceans provide a valuable food ~ for some fish.
▪ exploit , tap , tap into , use (as)
▪
The government hopes to tap new ~s of employment in the area of health.
▪ find , identify , locate
▪
We tried to locate the ~ of the sound.
PREPOSITION
▪ at ~ ( BrE )
▪
Is your salary taxed at ~ (= by your employer) ?
▪ ~ of
▪
a ~ of income/revenue
▪
a ~ of inspiration/strength
▪
a ~ of energy/food/light
PHRASES
▪ a variety of ~s
▪
The research was funded from a wide variety of ~s.
2 person, book, etc. that gives information
ADJECTIVE
▪ invaluable , useful , valuable
▪ authoritative , informed , reliable , reputable
▪ unreliable
▪ original
▪ independent
▪ anonymous , confidential , unnamed
▪
his refusal to reveal the identity of a confidential ~
▪ primary , secondary
▪ multiple , several , various
▪
The evidence is corroborated by multiple ~s.
▪ published
▪ biographical , documentary , historical , literary , written
▪ media , news
▪ diplomatic , government , intelligence , military , official , police
▪
Intelligence ~s report a build-up of troops just inside the border.
▪ data , information
VERB + SOURCE
▪ use (as)
▪ cite , quote
▪
Researchers try to quote primary ~s wherever possible.
▪ disclose , identify , name , reveal
▪
The police refused to reveal the ~ of their information.
▪ protect
SOURCE + VERB
▪ claim sth , describe sth , disclose sth , indicate sth , report sth , reveal sth , say sth , suggest sth , tell sb sth
▪
Government ~s indicated that a compromise might be reached.
▪
One ~ said: ‘We are angry at the way we have been treated.’
▪ deny sth
SOURCE + NOUN
▪ material
PREPOSITION
▪ according to ~s
▪
According to informed ~s, a takeover bid is planned for next month.
▪ ~ of
▪
The press room was a valuable ~ of information for journalists.
▪
Do you know the ~ of this rumour/rumor?
PHRASES
▪ ~s close to sb
▪
Sources close to the player claim he won't be entering this year's championship.