IELTS Vocabulary — Group 10

To gradually weaken or damage something, often secretly or indirectly.

Forming the hidden basis or true cause of something, even if it isn't immediately obvious.

Never having happened or existed before, with no earlier example for comparison.

To investigate or undo something complicated until it becomes clear, or to fall apart.

Not justified or deserved; done without a good enough reason.

A sudden, dramatic change or disruption that affects a whole system or society.

To support or maintain a law, decision, or principle, keeping it in force.

The greatest or highest possible degree of something.

Not clearly expressed or defined; lacking precise detail.

To officially confirm that something is accurate, true, or acceptable.

Able to adapt easily to many different functions, roles, or situations.

Capable of working successfully or surviving in practice.

To clear someone of blame or prove that a belief or decision was right after all.

Likely to change suddenly and unpredictably, especially from calm to dangerous.

Open to being harmed, hurt, or attacked, whether physically or emotionally.

The point right before something starts or happens; the very edge of a state or action.

To gradually become smaller, weaker, or less important over time.

To justify or make something necessary or appropriate.

Existing or happening over a large area or among many people.

To refuse to give or reveal something that someone else wants.

To remain strong or unharmed despite pressure, force, or difficulty.

To produce a result, or to give way under pressure or demand.