Thesaurus

Synonyms for Secure include:

air-tight, airtight, assured, bastioned, battlemented, bombproof, bonded, burglarproof, certified, covert, defendable, defensible, dependable, entrenched, established, fail-safe, fast, firm, fit, fixed, fortified, geostationary, geosynchronous, good, guaranteed, harmless, healthy, immobile, impregnable, in safe custody, innocuous, inviolable, invulnerable, leaded, moated, off the hook, promised, protected, risk-free, riskless, safe, safe and sound, safe-deposit, safety-deposit, secure, secured, shellproof, sheltered, shielded, snug, solid, sound, stable, stationary, steady, stormproof, strong, sure, taped, tight, unadjustable, unafraid, unassailable, unattackable, unbroken, unconquerable, undamaged, unhazardous, unhurt, uninjured, untouchable, untroubled, warranted, weatherproof, wholesome

secure is a ADJ.

assure, batten, batten down, ensure, fasten, fix, guarantee, insure, plug, procure, secure, stop up

secure is a VERB.