se·​cure | \ si-ˈkyu̇r How to pronounce secure (audio) , -ˈkyər \
securer; securest

Definition of secure

 (Entry 1 of 2)

1a : free from danger
b : affording safety a secure hideaway
c : trustworthy, dependable a secure foundation
d : free from risk of loss
2a : easy in mind : confident
b : assured in opinion or expectation : having no doubt
c archaic : unwisely free from fear or distrust : overconfident
3 : assured sense 1 a secure victory


secured; securing

Definition of secure (Entry 2 of 2)

transitive verb

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 libertyU.S. Constitution
c : to give pledge of payment to (a creditor) or of (an obligation) secure a note by a pledge of collateral
2a : to make fast secure a door secure a bike to a tree
b : to take (a person) into custody : hold fast : pinion
3a : to get secure usually lasting possession or control of secure a job
4 : to release (naval personnel) from work or duty

intransitive verb

1 of naval personnel : to stop work : go off duty
2 of a ship : to tie up : berth

Keep scrolling for more

Other Words from secure


securely adverb
secureness noun


securer noun

Choose the Right Synonym for 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

Examples of secure in a Sentence

Adjective We need to make our network more secure against attacks by hackers. The children were safe and secure in their beds. A safe is provided to keep your valuables secure from potential thieves. You should store your valuables in a secure place. How secure is your front door? You are now entering a secure area. I'm feeling secure about my place in the company. The company has established a secure foothold in the market. He believes his job is secure. They didn't begin to celebrate until they knew their victory was secure. Verb We must secure the country's borders. Secure your belongings under the seat. secure a child safety seat The seat is secured to the base by three screws. She scored a goal to secure the team's victory. She secured the zoo's future with a handsome bequest. He secured a loan using his house as collateral.
See More
Recent Examples on the Web: Adjective The deportation arm of the United States government appears to be secure under President Joe Biden. Jacob Silverman, The New Republic, "Biden’s Homeland Security Is Just as Bad as Trump’s," 13 Apr. 2021 Lee has long since shown herself to be among the most penetrating literary biographers in English, and has been content, before now, to write only the lives of dead authors whose reputations are secure. Andrew O’hagan, The New York Review of Books, "In the Act of Living," 13 Apr. 2021 Matsuyama’s place in Japanese golf history is secure. Los Angeles Times, "Column: Hideki Matsuyama’s historic Masters win carries different weight in Japan," 12 Apr. 2021 His standing with Trump is secure, and the former president could play a role in a Paxton-Bush showdown. James Barragán, Dallas News, "Can George P. Bush beat Ken Paxton for Texas AG in the Donald Trump-loving GOP?," 12 Apr. 2021 Lovullo intimated that Smith was aware that his spot in the rotation was not secure. Nick Piecoro, The Arizona Republic, "Diamondbacks remove Caleb Smith from rotation after one start," 8 Apr. 2021 Ensuring device-to-device payments are secure is going to be paramount, says Mary Kay Bowman, the head of global seller solutions at Visa. Benoit Morenne, WSJ, "Machines That Shop for Themselves Promise to Save Time and Money," 7 Apr. 2021 Even in a world where private conversations are secure, law enforcement has access to a dramatically increasing volume of information. Will Cathcart, Wired, "Encryption Has Never Been More Essential—or Threatened," 5 Apr. 2021 But lawmakers said the attack was a reminder that the Capitol is still not secure. New York Times, "Driver Rams Into Officers at Capitol, Killing One and Injuring Another," 2 Apr. 2021 Recent Examples on the Web: Verb At the time, the hope was to secure 500 doses of any available vaccine. Danya Perez, San Antonio Express-News, "'This took a lot of coordination': Students vaccinate hundreds in Southside ISD, UIW partnership," 11 Apr. 2021 Do not secure the rope to gutters or anything that cannot support your body weight. Brett Dvoretz,, "How to clean a roof," 10 Apr. 2021 The mother, who authorities did not identify for her privacy, could not secure a court permit that would prolong her hospital stay. Regine Cabato, Washington Post, "The Philippines’ drug war is putting more pregnant women behind bars. What happens to their children?," 9 Apr. 2021 Anthony Castonzo’s retirement opened up a big hole at left tackle, and the Colts couldn’t secure star Trent Williams in free agency to fill it. C.j. Doon,, "2021 NFL mock draft (Version 3.0): First-round projections after 49ers, Dolphins shake up the top 10," 31 Mar. 2021 The goal is to secure $85 million in the next three years for the first phase. Everton Bailey Jr., Dallas News, "As fundraising kicks off for Fair Park, nonprofit sticks to goal of adding green space by 2024," 23 Mar. 2021 Next is to secure a date to see our son and his girlfriend in a Chicago. Laura Johnston, cleveland, "What’s on our vaccination bucket list, from hair cuts to hugs," 19 Mar. 2021 The first step toward resolving this quagmire is to secure peace in Tigray, possibly with the help of the U.N. Security Council. John Mukum Mbaku, Washington Examiner, "Catastrophe in the Horn of Africa," 18 Mar. 2021 This increases the closing costs, but could be worth it if your No. 1 goal is to secure a lower rate and save on overall interest. Julia Carpenter, WSJ, "Mortgage Rates Are Rising. Read This Before You Refinance.," 12 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'secure.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of secure


circa 1545, in the meaning defined at sense 2c


1588, in the meaning defined at transitive sense 1a

History and Etymology for secure


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

Keep scrolling for more

Learn More about secure

Time Traveler for secure

Time Traveler

The first known use of secure was circa 1545

See more words from the same year

Statistics for secure

Last Updated

15 Apr 2021

Cite this Entry

“Secure.” Dictionary, Merriam-Webster, Accessed 22 Apr. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for secure



English Language Learners Definition of secure

 (Entry 1 of 2)

: protected from danger or harm
: providing protection from danger or harm
: guarded so that no one can enter or leave without approval



English Language Learners Definition of secure (Entry 2 of 2)

somewhat formal
: 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


se·​cure | \ si-ˈkyu̇r How to pronounce secure (audio) \
securer; securest

Kids Definition of secure

 (Entry 1 of 2)

1 : free from danger or risk Being home made me feel secure.
2 : strong or firm enough to ensure safety a secure lock
3 : free from worry or doubt : confident He's secure in his abilities.
4 : sure entry 1 sense 5, certain Victory is secure.


secured; securing

Kids Definition of secure (Entry 2 of 2)

1 : to make safe Police secured the building.
2 : to fasten or put something in a place to keep it from coming loose Secure your belongings under the seat.
3 : to get hold of : acquire … “Your father has finally secured passage for us …”— Theodore Taylor, The Cay
secured; securing

Legal Definition of secure

1 : to put beyond hazard of losing or not receiving secure the blessings of libertyU.S. Constitution preamble
2a : to protect or make certain (as by lien) make a just and equitable partition and secure the parties' respective interestsDenton 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

Keep scrolling for more

Comments on secure

What made you want to look up secure? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Name that Thing: Flower Edition

Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!