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See more synonyms for trusty on Thesaurus.com
adjective, trust·i·er, trust·i·est.
  1. able to be trusted or relied on; trustworthy; reliable.
  2. Archaic. trustful.
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noun, plural trust·ies.
  1. a person or thing that is trusted.
  2. a well-behaved and trustworthy convict to whom special privileges are granted.
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Origin of trusty

Middle English word dating back to 1175–1225; see origin at trust, -y1
Related formstrust·i·ly, adverbtrust·i·ness, noun
Can be confusedexecutor trustee trustytrustee trusty
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for trusty


adjective trustier or trustiest
  1. faithful or reliable
  2. archaic trusting
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noun plural trusties
  1. someone who is trusted, esp a convict to whom special privileges are granted
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Derived Formstrustily, adverbtrustiness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for trusty


early 13c., "trusting," from trust (n.) + -y (2); meaning "reliable, to be counted on" is from early 14c. The noun meaning "a prisoner granted special privileges as reward for good conduct" is first attested 1855.

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Online Etymology Dictionary, © 2010 Douglas Harper