secure

verbs

get by special effort
"He procured extra cigarettes even though they were rationed"
is derived from
cause to be firmly attached
"fasten the lock onto the door"; "she fixed her gaze on the man"
assure payment of
is a type of (narrower)
give surety or assume responsibility
"I vouch for the quality of my products"
make certain of
"This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success!"
fill or close tightly with or as if with a plug
"plug the hole"; "stop up the leak"
furnish with battens
"batten ships"

adjectives

free from fear or doubt; easy in mind
"he was secure that nothing will be held against him"
is derived from
antonym
free from danger or risk
"secure from harm"; "his fortune was secure"; "made a secure place for himself in his field"
is derived from
antonym
is similar to
characterized by certainty or security
"a tiny but assured income"; "we can never have completely assured lives"
is similar to
securely established
"holds a firm position as the country's leading poet"
is similar to
guaranteed not to fail
"a fail-safe recipe for cheese souffle"
is similar to
physically secure or dependable
"a sure footing"; "was on sure ground"
see also
kept safe or defended from danger or injury or loss
"the most protected spot I could find"
see also
free from danger or the risk of harm
"a safe trip"; "you will be safe here"; "a safe place"; "a safe bet"
see also
immune to attack; impregnable
"gunners raked the beach from invulnerable positions on the cliffs"
not likely to fail or give way
"the lock was secure"; "a secure foundation"; "a secure hold on her wrist"
is derived from
antonym
is similar to
securely in position; not shaky
"held the ladder steady"
is similar to
securely or solidly fixed in place; rigid
"the bolts are tight"
see also
securely placed or fastened or set
"a fixed piece of wood"; "a fixed resistor"
immune to attack; incapable of being tampered with
"an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection"
is derived from
financially sound
"a good investment"; "a secure investment"
is derived from