Question

no riddle is as tough as life(superlative degree of comparison)
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Answer 1

Answer:

riddle is most tough in life

riddle is tougher than life

Answer 2

The answer is as follows:

Life is the toughest riddle.

Degrees of Comparison

• Adjectives are classified into three degrees of comparison- positive, comparative, and superlative.

• The superlative degree is used to establish the highest or lowest feature in a person or element.  

• In the given sentence, the subject is 'life.' The superlative form of 'tough' is 'toughest.'

• The superlative form of an adjective is preceded by the article 'the.'