[ in-si-kyoor ]
/ ˌɪn sɪˈkyʊər /


subject to fears, doubts, etc.; not self-confident or assured: an insecure person.
not confident or certain; uneasy; anxious: He was insecure about the examination.
not secure; exposed or liable to risk, loss, or danger: an insecure stock portfolio.
not firmly or reliably placed or fastened: an insecure ladder.

Origin of insecure

From the Medieval Latin word insēcūrus, dating back to 1640–50. See in-3, secure

Related forms

in·se·cure·ly, adverbin·se·cure·ness, noun

Synonym study

3. See uncertain. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for insecure

British Dictionary definitions for insecure


/ (ˌɪnsɪˈkjʊə) /


anxious or afraid; not confident or certain
not adequately protectedan insecure fortress
unstable or shaky

Derived Forms

insecurely, adverbinsecureness, nouninsecurity, 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

Medicine definitions for insecure


[ ĭn′sĭ-kyur ]


Lacking emotional stability; not well-adjusted.
Lacking self-confidence; plagued by anxiety.

Related forms

in′se•curi•ty (-kyurĭ-tē) n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.