Positive:
* Strong: Powerful, intense, forceful, driving, compelling
* High: Elevated, robust, abundant, enthusiastic
* Intrinsic: Internal, self-driven, inherent, personal
* Extrinsic: External, incentive-based, reward-driven
* Positive: Uplifting, encouraging, inspiring, hopeful
* Effective: Productive, successful, fruitful, achievable
* Sustained: Enduring, consistent, persistent, long-lasting
* Focused: Directed, targeted, intentional, clear
* Genuine: Authentic, sincere, real, deep-seated
Negative:
* Weak: Fading, lacking, limited, insufficient
* Low: Diminished, depressed, apathetic
* Uninspired: Dull, unmotivated, bored, lethargic
* External: Manipulative, controlled, coerced, pressured
* Superficial: Shallow, artificial, insincere, unreal
* Unproductive: Inefficient, unsuccessful, fruitless, wasted
* Unstable: Erratic, inconsistent, fluctuating, fickle
* Unfocused: Scattered, distracted, ambivalent, unclear
Neutral:
* Personal: Individual, unique, specific
* Situational: Contextual, dependent, variable
* Underlying: Basic, fundamental, inherent
* Transient: Fleeting, temporary, short-lived
* Complex: Multifaceted, layered, intricate
The best adjectives to describe motivation will depend on the specific context and the nuances of the situation.