trustier; trustiest
always used before a noun
: able to be depended on
—used especially to describe a useful tool, device, etc., that you have had and used for a long time
I never go anywhere without my trusty pocketknife.
plural trusties
US
: a prisoner who is trusted and given special privileges because of good behavior
Cite this Entry
“Trusty.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/trusty. Accessed 21 Jun. 2026.
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