insecure

Insecure means either lacking self-confidence or lacking security. An insecure person might constantly doubt their own intelligence. An insecure building is an easy target for even the most bumbling burglar.

Break insecure down to its basic parts and you've got in, meaning "not," combined with secure, meaning "safe": not safe. This understanding of the word emerged in the 1640’s. It wasn't until 1917 that people began to use insecure to describe delicate, unsure egos. Today it's used to describe everything from easily cracked safes to uncertain futures.

PRIMARY MEANINGS OF: insecure

1
adj
lacking in security or safety
2
adj
not firm or firmly fixed; likely to fail or give way
3
adj
lacking self-confidence or assurance
FULL DEFINITIONS OF: insecure
1

adj lacking in security or safety

“his fortune was increasingly insecure
“an insecure future”
Synonyms:
unsafe
unprotected
lacking protection or defense
dangerous, unsafe
involving or causing danger or risk; liable to hurt or harm
precarious, shaky
not secure; beset with difficulties
unguaranteed, unsecured
without financial security
vulnerable
susceptible to attack
Antonyms:
secure
free from danger or risk
protected
kept safe or defended from danger or injury or loss
safe
free from danger or the risk of harm
assured
characterized by certainty or security
firm
securely established
fail-safe
guaranteed not to fail
sure
physically secure or dependable
invulnerable
immune to attack; impregnable
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adj not safe from attack

Synonyms:
unsafe
vulnerable
susceptible to attack
2

adj not firm or firmly fixed; likely to fail or give way

“the hinge is insecure
Synonyms
unfixed
not firmly placed or set or fastened
Antonyms:
secure
not likely to fail or give way
fixed
securely placed or fastened or set
steady
securely in position; not shaky
tight
securely or solidly fixed in place; rigid
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3

adj lacking self-confidence or assurance

“an insecure person lacking mental stability”
Synonyms
overanxious
anxious or nervous to an excessive degree
unassured
lacking boldness or confidence
Antonyms:
secure, unafraid, untroubled
free from fear or doubt; easy in mind
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