free from or not exposed to danger or harm; safe.

dependable; firm; not liable to fail, yield, become displaced, etc., as a support or a fastening

The building was secure, even in an earthquake.

affording safety, as a place

He needed a secure hideout.

in safe custody or keeping

Here in the vault the necklace was secure.

free from care; without anxiety

emotionally secure.

firmly established, as a relationship or reputation

He earned a secure place among the baseball immortals.

sure; certain; assured

secure of victory; secure in religious belief.

safe from penetration or interception by unauthorized persons

secure radio communications between army units.

Archaic . overconfident.

to get hold or possession of; procure; obtain

to secure materials; to secure a high government position.

to free from danger or harm; make safe

Sandbags secured the town during the flood.

to effect; make certain of; ensure

The novel secured his reputation.

to make firm or fast, as by attaching

to secure a rope.

Finance .

to assure payment of (a debt) by pledging property.

to assure (a creditor) of payment by the pledge or mortgaging of property.

to lock or fasten against intruders

to secure the doors.

to protect from attack by taking cover, by building fortifications, etc.

The regiment secured its position.

to capture (a person or animal)

No one is safe until the murderer is secured.

to tie up (a person), esp. by binding the person's arms or hands; pinion.

to guarantee the privacy or secrecy of

to secure diplomatic phone conversations.

to be or become safe; have or obtain security.

Nautical .

to cover openings and make movable objects fast

The crew was ordered to secure for sea.

to be excused from duty

to secure from general quarters.