Ponderous (Antonym)

• heavy
• bulky
• light
• laboured

Hideous (Antonym)

• frightful
• horrible
• beautiful
• ugly

Some of their customs are barbarous. (Antonym)

• modern
• polite
• civilized
• none of these

Mr. Das is living a miserable life. (Antonym)

• boring
• painful
• unpleasant
• Happy

Every employee has liability to his office. (Antonym)

• consumption
• exemption
• presumption
• assumption

The geologists declared that fossil was authentic.

• fake
• duplicate
• original
• cultured

We received a cordial welcome from our host. (Antonym)

• official
• formal
• cold
• warm

Earthquake are frequent in Japan. (Antonym)

• rare
• unusual
• few
• extinct

He looked elated on hearing the news. (Antonym)

• anxious
• desperate
• excited
• depressed

Knowledge is power. (Antonym)

• illiteracy
• ignorance
• foolishness
• backwardness