1. (a.) Useful; durable; adapted to any good end use\; beneficial; advantageous.

2. (a.) Prepared for rendering service; capable of, or fit for, the performance of duty; hence, active; diligent.

advantageous agential agentival agentive aidful aiding appropriate assisting banausic beneficial commodious conducive constructive contributory durable employable expedient facilitating favoring fitting forwarding functional functioning furthersome good for handy helpful instrumental intermediary long-lasting mediating mediatorial ministerial ministering of general utility of help of service of use operating operative positive practicable practical pragmatical profitable promoting proper remedial salutary subservient therapeutic tough usable useful utilitarian workable working