1. JEOPARDIZE (VERB): endanger
Synonyms: imperil, risk
Antonyms: guard, protect
Example Sentence: They jeopardized the security establishment.
2. JUDICIOUSLY (ADVERB): suitably
Synonyms: duly, aptly
Antonyms: unsuitably, improperly
Example Sentence: It was done judiciously.
3. INHERENT (ADJECTIVE): hereditary
Synonyms: intrinsic, inbred
Antonyms: acquired, extrinsic
Example Sentence: The inherent qualities of a person can’t be overlooked.
4. SUBSTANTIAL (ADJECTIVE): important
Synonyms: significant, considerable
Antonyms: inconsiderable, insignificant
Example Sentence: He made substantial changes in the system.
5. ABNEGATE (VERB): To give up (rights or a claim, for example); renounce
Synonyms: relinquish, abdicate
Antonyms: usurp, retain
Example Sentence: The minister abnegated the luxuries of life.
6. ABSTEMIOUS (ADJECTIVE): Characterized by abstinence or moderation
Synonyms: moderate, continent
Antonyms: glutton, sensual
Example Sentence: They want to live a quiet, abstemious life.
7. ABSTRUSE (ADJECTIVE): Difficult to understand; recondite
Synonyms: obscure, intricate
Antonyms: distinct, clear
Example Sentence: The students avoided the professor’s abstruse lectures.
8. BEFOG (VERB): to make confused
Synonyms: dazzle, daze
Antonyms: clarify, cleanse
Example Sentence: My brain was befogged by lack of sleep.
9. BLANDISHMENT (NOUN): flattery
Synonyms: adulation, cajolery
Antonyms: criticism, denunciation
Example Sentence: The boss wasn’t impressed with the blandishments.
10. IMPERTURBABILITY (NOUN): balance
Synonym: aplomb, coolness
Antonym: agitation, anxiety
Example Sentence: His countenance had resumed its habitual imperturbability.