headstrong (adj.)
- balking
- balky
- bigoted
- bullheaded
- case-hardened
- disobedient
- dogged
- dogmatic
- fanatic
- hardheaded
- heady
- insubordinate
- intolerant
- irresponsible
- lawless
- licentious
- mulish
- mutinous
- obstinate
- opinionated
- overzealous
- persevering
- pertinacious
- pigheaded
- rampant
- refractory
- restive
- self-willed
- set
- stiff-necked
- strong-willed
- stubborn
- sulky
- sullen
- tenacious
- unaccountable
- unbridled
- unchecked
- uncontrolled
- uncooperative
- uncurbed
- undisciplined
- ungoverned
- unregenerate
- unrestrained
- wildcat
- willful
- wrongheaded
As headstrong as an allegory on the banks of the Nile.