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adjective, se·cure \si-ˈkyu̇r\

Simple Definition of secure

  • : protected from danger or harm

  • : providing protection from danger or harm

  • : guarded so that no one can enter or leave without approval

Source: Merriam-Webster's Learner's Dictionary

Full Definition of secure


  1. 1a archaic :  unwisely free from fear or distrust :  overconfidentb :  easy in mind :  confidentc :  assured in opinion or expectation :  having no doubt

  2. 2a :  free from dangerb :  free from risk of lossc :  affording safety <a secure hideaway>d :  trustworthy, dependable <a secure foundation>

  3. 3 :  assured 1 <a secure victory>

securely adverb
secureness noun

Examples of secure in a sentence

  1. We need to make our network more secure against attacks by hackers.

  2. The children were safe and secure in their beds.

  3. A safe is provided to keep your valuables secure from potential thieves.

  4. You should store your valuables in a secure place.

  5. How secure is your front door?

  6. You are now entering a secure area.

  7. I'm feeling secure about my place in the company.

  8. The company has established a secure foothold in the market.

  9. He believes his job is secure.

  10. They didn't begin to celebrate until they knew their victory was secure.

Origin of secure

Latin securus safe, secure, from se without + cura care — more at suicide

First Known Use: circa 1533



verb, se·cure

Simple Definition of secure

  • : to make (something) safe by guarding or protecting it

  • : to put (something) in a place or position so that it will not move

  • : to make (something) certain

Source: Merriam-Webster's Learner's Dictionary

Full Definition of secure


  1. transitive verb
  2. 1a :  to relieve from exposure to danger :  act to make safe against adverse contingencies <secure a supply line from enemy raids>b :  to put beyond hazard of losing or of not receiving :  guarantee <secure the blessings of liberty — United States Constitution>c :  to give pledge of payment to (a creditor) or of (an obligation) <secure a note by a pledge of collateral>

  3. 2a :  to take (a person) into custody :  hold fast :  pinionb :  to make fast <secure a door> <secure a bike to a tree>

  4. 3a :  to get secure usually lasting possession or control of <secure a job>b :  bring about, effect

  5. 4 :  to release (naval personnel) from work or duty

  6. intransitive verb
  7. 1 of naval personnel :  to stop work :  go off duty

  8. 2 of a ship :  to tie up :  berth

securer noun

Examples of secure in a sentence

  1. We must secure the country's borders.

  2. Secure your belongings under the seat.

  3. secure a child safety seat

  4. The seat is secured to the base by three screws.

  5. She scored a goal to secure the team's victory.

  6. She secured the zoo's future with a handsome bequest.

  7. He secured a loan using his house as collateral.


First Known Use of secure


Synonym Discussion of secure

ensure, insure, assure, secure mean to make a thing or person sure. ensure, insure, and assure are interchangeable in many contexts where they indicate the making certain or inevitable of an outcome, but ensure may imply a virtual guarantee <the government has ensured the safety of the refugees>, while insure sometimes stresses the taking of necessary measures beforehand <careful planning should insure the success of the party>, and assure distinctively implies the removal of doubt and suspense from a person's mind <I assure you that no harm will be done>. secure implies action taken to guard against attack or loss <sent reinforcements to secure their position>.

SECURE Defined for Kids



adjective se·cure \si-ˈkyu̇r\

Definition of secure for Students


  1. 1 :  free from danger or risk <Being home made me feel secure.>

  2. 2 :  strong or firm enough to ensure safety <a secure lock>

  3. 3 :  free from worry or doubt :  confident <He's secure in his abilities.>

  4. 4 :  1sure 5, certain <Victory is secure.>



verb se·cure

Definition of secure for Students


  1. 1 :  to make safe <Police secured the building.>

  2. 2 :  to fasten or put something in a place to keep it from coming loose <Secure your belongings under the seat.>

  3. 3 :  to get hold of :  acquire <… “Your father has finally secured passage for us …” — Theodore Taylor, The Cay>

Law Dictionary


transitive verb se·cure

Legal Definition of secure


  1. 1 :  to put beyond hazard of losing or not receiving <secure the blessings of liberty — U.S. Constitution preamble>

  2. 2a :  to protect or make certain (as by lien) <make a just and equitable partition and secure the parties' respective interests — Denton v. Lazenby, 879 P.2d 607 (1994)> b :  to give security for (as a loan) or otherwise assure the payment, performance, or execution of with security <the court imposed a lien on his property to secure the judgment> c :  to give or pledge security to (as a creditor); broadly :  to cause to have security or a security interest <a creditor secured by a lien on real property>

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