1. STOUT(ADJECTIVE): Fearless

Synonyms: bold, brave     

Antonyms: fearful, cowardly

Example Sentence:

The invasion was held up by unexpectedly stout resistance.

2. SPLEEN (NOUN): Hate

Synonyms: anger, caprice        

Antonyms: cheer, joy

Example Sentence:

There were other targets for his spleen.

3. PUNGENT(ADJECTIVE): Caustic

Synonyms: acrimonious, sarcastic           

 Antonyms: dull, bland

Example Sentence:

He enjoyed the play’s shrewd and pungent social analysis.

4. ROUSE(VERB): Stimulate

Synonyms: provoke, incite          

Antonyms: calm, decrease

Example Sentence:

It roused a feeling of rebellion in him.

5. ESCAPADE(NOUN): Adventure

Synonyms: fling, stunt   

Antonyms:  seriousness, humorlessness

Example Sentence:

The whole ridiculous escapade was his idea.

6. STRATAGEM(NOUN): Trick

Synonyms: gimmick, ruse       

Antonyms: truth, honesty

                        

Example Sentence:

You must need a perfect stratagem to solve this blunder.

7. 7.ESOTERIC(ADJECTIVE): Mysterious

Synonyms: obscure, arcane              

Antonyms: common, obvious

Example Sentence:

Shereen has published several books on pathworking and other esoteric subjects.

8. UNFATHOMABLE(ADJECTIVE): Baffling

Synonyms: incomprehensible, inexplicable       

Antonyms: clear, straightforward

Example Sentence:

How unfathomable and odd is life!

9. TENACIOUS(ADJECTIVE):  Stubborn

Synonyms: dogged, determined       

Antonyms:  changeable, flexible

Example Sentence:

He is regarded as a persistent and tenacious interviewer.

10. SLIPSHOD(ADJECTIVE): Careless

Synonyms: sloppy, loose     

Antonyms: careful, polished

Example Sentence:

The hotel had always been run in a slipshod way.