Trŭst'y, a.
a. [compar. TRUSTIER; superl. TRUST-IEST.]
Sense 1. Admitting of being safely trusted; justly deserving confidence; fit to be confided in; trustworthy; reliable. “Your trusty and most valiant servitor.” Shak.
Sense 2. Hence, not liable to fail; strong; firm. “His trusty sword.” Spenser.