trusty

 
Pronunciation: /ˈtrʌsti/

adjective (trustier, trustiest)

[attributive] archaic or humorous
  • having served for a long time and regarded as reliable or faithful: my trusty old Morris Minor their trusty steeds

noun (plural trusties)

  • a prisoner who is given special privileges or responsibilities in return for good behaviour.

Derivatives

trustily

adverb

trustiness

noun