adjective

1. free from fear, care, doubt, or anxiety; not worried, troubled, or apprehensive
2. free from danger; not exposed to damage, attack, etc.; safe
3. in safekeeping or custody
4. not likely to fail or give way; firm; strong; stable to make a knot secure
5. reliable; dependable a secure investment
6. Archaic overconfident and careless

Etymology: L securus < se-, free from, apart (see secede) + cura, care: see cure

transitive verb secured -·cured′, securing -·cur′·ing

1. to make secure, or safe; guard; protect to secure a position against attack
2. to make sure or certain; guarantee; ensure, as with a pledge to secure a loan with collateral
3. 1. to make firm, fast, tight, etc. secure the bolt
   2. to put under restraint; tie up
4. to get hold or possession of; obtain; acquire to secure aid
5. to take into custody; capture
6. to bring about; cause to secure a laugh
7. Naut. to bring to a halt; stop

intransitive verb

1. to give security a policy that secures against loss
2. Naut. to stop working: said of personnel