Another word for opportunity which begins with 'S' is scope.
softening
The alternate name for pigs is swine
The word beginning is an abstract noun, a word for the start of something.
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.
Satanic
salary
that may be the name of an instrument in another language.
spring
Another word for opportunity which begins with 'S' is scope.
synopsis
Sort or Savor
Side-Street
sojourn
spousal
Substitute.
softening