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definitions

jittery

[jit-uh-ree]

adjective, jit·ter·i·er, jit·ter·i·est.

extremely tense and nervous; jumpy: He's very jittery about the medical checkup.

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Origin of jittery

An Americanism dating back to 1930–35; jitter + -y1
Related formsjit·ter·i·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for jitteriness

jittery

adjective

informal nervous and anxious
Derived Formsjitteriness, 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 jitteriness

jittery

adj.

1931, American English, from jitter + -y (2). Related: Jitteriness.

Online Etymology Dictionary, © 2010 Douglas Harper