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discretionary

[dih-skresh-uh-ner-ee]
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adjective
  1. subject or left to one's own discretion.
  2. for any use or purpose one chooses; not earmarked for a particular purpose: discretionary income; a discretionary fund.

Origin of discretionary

First recorded in 1690–1700; discretion + -ary
Related formsdis·cre·tion·ar·i·ly, adverbnon·dis·cre·tion·ar·y, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for nondiscretionary

discretionary

discretional

adjective
  1. having or using the ability to decide at one's own discretiondiscretionary powers
Derived Formsdiscretionarily or discretionally, adverb
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 nondiscretionary

discretionary

adj.

1680s (implied in discretionarily); see discretion + -ary.

Online Etymology Dictionary, © 2010 Douglas Harper