1. PERIL (NOUN):danger

Synonyms: insecurity, jeopardy             Antonyms: safety, security

Example sentence:

Everyone knows drinking phenyl is an act that will put your life in peril.

2. CAPTIVITY (NOUN):confinement

Synonyms: custody, incarceration                   Antonyms: liberty, liberation

Example sentence:

Nelson Mandela was freed from prison after 27 years in captivity.

3. LEVERAGE (NOUN):advantage

Synonyms: power, influence             Antonyms: weakness, decrepitude

Example sentence:

Owing to the gasoline shortage, the fuel suppliers have a great deal of leverage in the pricing war.

4. BRACE (VERB):prepare

Synonyms: fortify, gird                 Antonyms: weaken, detach

Better be braced for your upcoming examinations.

5. SIMMER (VERB):be tense

Synonyms: be angry, be agitated                    Antonyms: soothe, be happy

Example sentence:

The resentment between the two teams has been simmering all season.

6. EXTERMINATE (VERB):annihilate

Synonyms: decimate, extinguish             Antonyms: create, build

Example sentence:

A huge effort was made to exterminate the rats.

7. DOOM (NOUN):calamity

Synonyms: cataclysm, disaster     Antonyms: blessing, boon

Example sentence:

The feeling of impending doom continued hitting my mind.

8. LOOM (VERB):tocome into view

Synonyms: hover, mount emerge           Antonyms: decline, descend

Example sentence:

The island loomed through the mist.

9. RUGGED (ADJECTIVE):strong

Synonyms: hardy, robust              Antonyms: weak, delicate

Example sentence:

He’s rugged and durable, but not the best technical boxer.

10. APLOMB (NOUN):assurance

Synonyms: equanimity, confidence          Antonyms: fear, goucheness

Example sentence:

I could never walk in high heels with the same aplomb as the fashion models.