1. MATRIARCH (noun) : कुलमाता
Meaning: a female head of a family
Synonyms: feminine, maternal, womanly
Antonyms: young, immature
Sentence: when the matriarch dies, one of the oldest offspring take her place.
2. ARCHIPELAGO (noun) : द्वीपसमूह
Meaning: a group of islands
Synonyms: peninsula, enclave, bar, cay
Antonyms: landmass, shore, continent
Sentence: lakshadweep is an archipelago of 12 atolls, 3 reefs & 5 submerged banks.
3. SABOTAGE (verb) : तोड़-फोड़
Meaning: deliberately destroy, damage or obstruct etc
Synonyms: demolishing, destruction, ravage
Antonyms: conservation, protection, salvage
Sentence: they tried to sabotage the ceasefire.
4. HITHERTO (adj.) : अब तक
Meaning: describe a situation that has existed up to this point or upto the present time
Synonyms: before, yet, so far
Antonyms: afterwards, later, there upon
Sentence: smriti madhana revealed hitherto great talent on cricket pitch.
5. EXPULSION (noun) : निष्कासन
Meaning: the action of forcing someone to leave an organisation.
Synonyms: banishment, displacement
Antonyms: admission, allow
Sentence: expulsion from school a harsh form of punishment.
6. SEMANTIC (noun) : अर्थ
Meaning: connected with the meaning & sentence
Synonyms: connotation, definition, explanation
Sentence: my ideas on semantics needed more careful exploration.
7. DISDAIN (noun) : तिरस्कार
Meaning: the feeling that somebody is not good enough to be respected.
Synonyms: contempt, hate, execration
Antonyms: acceptance, tolerance
Sentence: he turned his head away in disdain.
8. COHERENT (adj.) : सुसंगत
Meaning: logical & consistent
Synonyms: analytics, consequent
Antonyms: eristic, misleading
Sentence: the government lacks a coherent economic policy.
9. SINISTER (adj.) : भयावह
Meaning: singularly evil or productive of evil
Synonyms: baleful, dire, doomy
Antonyms: unthreatening, bright, golden
Sentence: there was something sinister about his death.
10. VERNACULAR (noun) : मातृभाषा
Meaning: the language spoken in a particular area
Synonyms: colloquial, informal
Antonyms: formal, learned, literary
Sentence: he lapsed into the local vernacular.