acute
sharp
There are several examples of "s" words that are similar in meaning to "clever," but they do have different connotations associated with them. For instance, snark, which carries a somewhat negative meaning. On the other hand, sharp, has a much more positive meaning.
posterior is similar in meaning to what?
A sharp key signature is one that contains sharps.
Poly has a similar meaning with multi-.
similar meaning
similar in meaning to expedite.
A similar meaning to masticate is the word: chew.
Representative has a similar meaning to iconic.
the point of a sharp thing.
prompt, fast, speedy
similar meaning of pharasel verb economize