Positive:
* Strong: Robust, firm, steadfast, unwavering, unyielding, dependable
* Helpful: Beneficial, useful, constructive, encouraging, reassuring
* Caring: Compassionate, empathetic, loving, kind, nurturing, sympathetic
* Reliable: Trustworthy, stable, secure, solid, dependable, consistent
* Active: Active, engaged, involved, proactive, enthusiastic
* Effective: Successful, productive, efficient, fruitful, impactful
Neutral:
* Technical: Structural, mechanical, architectural
* Financial: Financial, monetary, economic, budgetary
* Social: Community, group, societal
Negative:
* Weak: Fragile, flimsy, shaky, unstable
* Ineffective: Unsuccessful, unproductive, futile, ineffectual
* Insincere: Superficial, hollow, insincere, hypocritical
The best adjective to use will depend on the context in which you are using the word "support."