Meaning of “insecure” in the English Dictionary

"insecure" in British English

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insecureadjective

uk /ˌɪn.sɪˈkjʊər/ us /ˌɪn.səˈkjʊr/

insecure adjective (NOT CONFIDENT)

C1 Insecure people have little confidence and are uncertain about their own abilities or if other people really like them:

I wonder what it was about her upbringing that made her so insecure.
He still feels insecure about his ability to do the job.
insecurely
adverb uk /ˌɪn.sɪˈkjʊə.li/ us /ˌɪn.sɪˈkjʊr.li/

The shelves were insecurely fastened and fell to the floor.
insecurity
noun [ C or U ] uk /ˌɪn.sɪˈkjʊə.rə.ti/ us /ˌɪn.səˈkjʊr.ə.t̬i/

C2

a sense/feeling of insecurity
She had developed an outgoing personality to mask her deep insecurities.
financial insecurity

(Definition of “insecure” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"insecure" in American English

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insecureadjective

us /ˌɪn·sɪˈkjʊər/

insecure adjective (NOT CONFIDENT)

(of people) lacking confidence and doubting their own abilities:

Eleanor was shy and insecure as a child.

insecure adjective (NOT SAFE)

(of objects or situations) not fixed or safe:

The stairs seemed kind of rickety and insecure.

(Definition of “insecure” from the Cambridge Academic Content Dictionary © Cambridge University Press)