adj. 可靠的；可信任的 (trusty的变形)

Trusty \Trust"y\, a. [Compar. {Trustier}; superl. {Trustiest}.]
1. Admitting of being safely trusted; justly deserving
confidence; fit to be confided in; trustworthy; reliable.

Your trusty and most valiant servitor. --Shak.

2. Hence, not liable to fail; strong; firm.

His trusty sword he called to his aid. --Spenser.

3. Involving trust; as, a trusty business. [R.] --Shak.