Bible Theasaurus

Absurd (4 instances)
Extravagant (2 instances)
Foolish (271 instances)
Frivolous (4 instances)
Improper (9 instances)
Inconsistent (5 instances)
Insensate (1 instance)
Irrational (9 instances)

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain