Both "cleverest" and "most clever" are grammatically correct forms to use to compare intelligence. "Cleverest" is the superlative form of "clever," while "most clever" follows the standard comparative form when dealing with adjectives that are polysyllabic or two syllables long.
4 syllables am- phi- bi- an
Awake has two syllables. The syllables are a-wake.
There are two syllables in "wistfully."
There are 14 syllables.
There are 3 syllables in symphony:sym/pho/ny
there are 2 syllables in stomach. To see why, search 'How many syllables in attack?'
Happened has two syllables. The syllables are hap-pened.
There are two syllables.
2 syllables
4373598 syllables.
2 syllables