1. a rule of conduct or action
Precept
a rule of conduct or action

2. Beneficial, helpful, healthy, wholesome
Salutary
Beneficial, helpful, healthy, wholesome

3. bitterly severe, withering; causing great harm
Scathing
bitterly severe, withering; causing great harm
For those of you who would give a scathing review of math.

4. to whip, punish, cause suffering, criticism
Scourge
to whip, punish, cause suffering, criticism

5. funereal, typical of the tomb; extremely gloomy or dismal
Sepulchral
funereal, typical of the tomb; extremely gloomy or dismal

6. to cause sleep, relating to sleepiness ; something that includes sleep
Soporific
to cause sleep, relating to sleepiness ; something that includes sleep

7. Straitlaced
strict in regard to moral standards and conduct; prudish and puritanical

8. lasting only a short time fleeting, one who stays only a short time
Transient
lasting only a short time fleeting, one who stays only a short time

9. not easily carried, handled, or managed because of size or complexity
Unwieldy
not easily carried, handled, or managed because of size or complexity

10. Vapid
dull, uninteresting, tiresome, lacking sharpness, flavor, liveliness or force