1. IMPAIR (VERB): (ख़राब) weaken or damage (something, especially a faculty or function).
Synonyms: diminish, spoil
A noisy job could permanently impair their hearing.
2. RELENTLESS (ADJ.): (सतत) unceasingly intense.
Synonyms: continuing, uninterrupted
She had relentless determination to finish the project.
3. GARNER (VERB): (संचित करना) gather or collect (something, especially information or approval).
Synonyms: accumulate, amass
The police struggled to garner sufficient evidence.
4. LYNCHPIN (NOUN): a person or thing vital to an enterprise or organization.
Synonyms: backbone, keystone
Nurses are the linchpin of the National Health Service.
5. ENORMITY (NOUN): (दुष्टता) the great or extreme scale, seriousness, or extent of something perceived as bad or morally wrong.
Synonyms: immensity, behemoth
I don't think you realize the enormity of the problem.
6. THRASH OUT (PHRASAL VERB): to talk about (something) in order to make a decision, find a solution, etc.
They had a meeting to thrash out their problems.
7. SURGE (VERB): a sudden and great increase.
Synonyms: rise, pour
An unexpected surge in electrical power caused the computer to crash.
8. COGNISANCE (NOUN): (ज्ञान) knowledge or awareness.
Synonyms: perception, notice
My son has no cognizance that his reckless actions are dangerous.
9. ENTRANT (NOUN): a person or group that enters or takes part in something.
Synonyms: beginner, newcomer
The prize will be awarded to the entrant who wins the tiebreak.
10. PLETHORA (NOUN): (बहुतायत) a large or excessive amount of something.
Synonyms: abundance, surfeit
There are a plethora of books about the royal family.
11. HINGE (VERB): depend entirely on.
Synonyms: depend, pivot
The future of the industry could hinge on the outcome of next month's election.
12. IMMUTABLE (ADJ): (अडिग) unchanging over time or unable to be changed.
Synonyms: unyielding, fixed
Some people regard grammar as an immutable set of rules.