1. STIFLE (VERB): Restrain:(बुझाना)
Synonyms: suppress, repress
Antonyms: release, free
Example Sentence:
She makes no attempt to stifle a yawn. 
2. ARCHAIC (ADJECTIVE): Old-fashioned:(अप्रचलित)
Synonyms: obsolete, antiquated
Antonyms: latest, modern
Example Sentence:
These archaic practices are advocated by people of limited outlook. 
3. PRUNE (VERB): Pare down:(छाँटना)
Synonyms: trim, reduce
Antonyms: include, increase
Example Sentence:
Economic hard times are forcing the companies to prune their budget. 
4. ASCENSION (NOUN): Taking over:(अधिरोहण)
Synonyms: succession, assumption
Antonyms: declension, decline
Example Sentence:
He was killed after his ascension to the throne. 
5. STIFFEN (VERB): Make or become harder:(ठोस बनाना)
Synonyms: tighten, solidify
Antonyms:  weaken, dilute
Example Sentence:
The blood supply to the skin is reduced when muscles stiffen. 
6. FRET (VERB): To worry:(चिढ़ना)
Synonyms: agonize, bother
Antonyms: please, delight
Example Sentence:
She was always fretting about something or the other. 
7. ETHEREAL (ADJECTIVE): Extremely delicate:(हल्का)
Synonyms: light, sublime
Antonyms: earthly, indelicate
Example Sentence:
In this ethereal realm are the currents that make possible wireless telegraphy. 
8. CONTRITE (ADJECTIVE): Chastened:(पश्चात्तापी)
Synonyms: repentant, sorrowful
Antonyms: indifferent, unapologetic
Example Sentence:
He was so contrite that he wrote me a letter of apology. 
9. CORNUCOPIA (NOUN):  Abundance:(प्राचुर्य)
Synonyms: bounty, fullness
Antonyms: need, lack
Example Sentence:
I shall come from London Town with a cornucopia of presents. 
10. FLOP (VERB): Slump:(गिर पड़ना)
Synonyms: fall, drop
Antonyms: succeed, achieve
Example Sentence:
She flopped, exhausted, on to the sofa.