superb= splendid; excellent; beyond the expected
superimpose= to lay or place something over something else
superintendent= a person with the highest power, power above someone else
superior= above average in quality; excellent
supervisor= a person who stands over and above someone in rank; a manager in charge of someone else
surcharge= am amount of money (charge) over and above what is already being paid
surplus= a quantity or amount over and above what is actually needed; extra
surprise= something that is beyond what is expected
surreal= beyond what is real or believable; bizarre
surtax= an extra ta beyond the normal tax