petulant

As an adjective petulant

is exuberant, lively.

As a noun momentum is

(physics) (of a body in motion) the tendency of a body to maintain its inertial motion; the product of its mass and velocity.

Unpetulant is likely misspelled.

Unpetulant has no English definition.

As an adjective petulant is

childishly irritable.

Nonpetulant is likely misspelled.

Nonpetulant has no English definition.

As an adjective petulant is

childishly irritable.

As an adjective petulant

is childishly irritable.

As an adverb perpetually is

seeming to never end; endlessly; constantly.

As adjectives the difference between petulant and petulant

is that petulant is exuberant, lively while petulant is exuberant, lively.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective petulant is

exuberant, lively.

As adjectives the difference between petulant and wayward

is that petulant is exuberant, lively while wayward is given to wilful, perverse deviation from the expected norm; tending to stray.

In obsolete terms the difference between petulant and ornery

is that petulant is forward; pert; insolent; wanton while ornery is commonplace, inferior.

As adjectives the difference between petulant and ornery

is that petulant is childishly irritable while ornery is cantankerous, stubborn, disagreeable.

As adjectives the difference between belligerent and petulant

is that belligerent is engaged in warfare, warring while petulant is childishly irritable.

As a noun belligerent

is a state or other armed participant in warfare.