11 Burnish (verb)
Meaning-
Enhance or perfect (something such as a reputation I or a skill)
Synonyms: buff, dress, furbish, gloss, grind, polish, rub, shine, smooth

12 Subterranean (adj)
Meaning-
Secret; concealed (गुप्त)
Synonyms: belowground, subsurface, underground
Antonyms: aboveground, surface

13 Buoyancy (noun)
Meaning
– A cheerful and optimistic attitude or disposition (उछाल)

14 Bellicosity (noun)
Meaning-
A natural disposition to fight (लड़ाई का प्रेम)
Synonyms: assaultive, belligerent, brawly, chippy, combative, confrontational
Antonyms: nonaggressive, nonbelligerent, pacific, peaceable, peaceful

15 Archaic (adj)
Meaning-
Very old or old-fashioned
Synonyms: antiquated, dated, démodé, demoded, fossilized, kaput

16 Incipient (adj)
Meaning-
Beginning to happen or develop (प्रारंभिक)
Synonyms: aborning, budding, inceptive, inchoate, nascent
Antonyms: adult, full-blown, full-fledged, mature, ripe, ripened

17 Clinch (noun)
Meaning-
A struggle or scuffle at close quarters, confirm or settle (a contract or bargain)

The Hindu Editorial Vocabulary