Collocations for source - noun

excellent, fertile, good, great, lucrative, reliable, rich, valuable
a fertile source of ideas
a lucrative source of income
a rich source of vitamins

important, large, main, major, principal
cheap
a cheap source of protein

external, foreign, outside
Do you have any foreign sources of income?

independent
an independent source of funding

only, single
The only source of light was the fire.

additional, alternative, different, new, other
We need to look for alternative sources of energy.
to develop new sources of revenue

same
likely, potential
a potential source of conflict

unexpected
constant
a constant source of irritation

natural
renewable, sustainable
The town obtains all its energy from renewable sources.

energy, food, fuel, heat, light, power, protein, water
funding, revenue

be, constitute, prove, provide
The census constitutes the principal source of official statistics.
These crustaceans provide a valuable food source for some fish.

exploit, tap, tap into, use (as)
The government hopes to tap new sources of employment in the area of health.

find, identify, locate
We tried to locate the source of the sound.

at source (BrE)
Is your salary taxed at source (= by your employer)?

source of
a source of income/revenue
a source of inspiration/strength
a source of energy/food/light

a variety of sources
The research was funded from a wide variety of sources.

invaluable, useful, valuable
authoritative, informed, reliable, reputable
unreliable
original
independent
anonymous, confidential, unnamed
his refusal to reveal the identity of a confidential source

primary, secondary
multiple, several, various
The evidence is corroborated by multiple sources.

published
biographical, documentary, historical, literary, written
media, news
diplomatic, government, intelligence, military, official, police
Intelligence sources report a build-up of troops just inside the border.

data, information

use (as)
cite, quote
Researchers try to quote primary sources wherever possible.

disclose, identify, name, reveal
The police refused to reveal the source of their information.

protect

claim sth, describe sth, disclose sth, indicate sth, report sth, reveal sth, say sth, suggest sth, tell sb sth
Government sources indicated that a compromise might be reached.
One source said: ‘We are angry at the way we have been treated.’

deny sth

material

according to sources
According to informed sources, a takeover bid is planned for next month.

source of
The press room was a valuable source of information for journalists.
Do you know the source of this rumour/rumor?

sources close to sb
Sources close to the player claim he won't be entering this year's championship.