1. GARGANTUAN (ADJECTIVE): (विशाल): enormous

Synonyms: massive, huge

Antonyms: tiny

Example Sentence: Tigers and lions have a gargantuan appetite.

2. RELATIVE (ADJECTIVE): (तुलनात्मक): comparative

Synonyms: respective, comparable

Antonyms: absolute

Example Sentence: The relative effectiveness of the various mechanisms is not known.

3. SUBSTANTIAL (ADJECTIVE): (प्रबल): sturdy

Synonyms: solid, stout

Antonyms: insubstantial

Example Sentence: He lives near the row of substantial Victorian villas.

4. EFFICACY (NOUN): (प्रभावोत्पादकता): effectiveness

Synonyms: success, potency

Antonyms: inefficacy

Example Sentence: There is little information on the efficacy of this treatment.

5. INTRIGUE (VERB): (दिलचस्प बनाना): interest

Synonyms: fascinate, attract

Antonyms: bore

Example Sentence: The whole class was intrigued by his unique question.