These collocations are important for band 7 and 8 IELTS speaking and writing and will help you sound more natural

Advanced collocations for IELTS speaking and writing

have a very important part or function in something.

to find a compromise or maintain equal parts of something.

There has been unprecedented growth in sth

to lessen or reduce the dangers or threats.

to obtain a deep understanding or knowledge about something.

to use the possible or likely power, capabilities, or ability effectively.

to make a judgment or decision after thinking about the known facts.

experience the worst part of something bad or harmful.

to appear important, worrying, and difficult to ignore.

to become liable or subject to certain expenses.