Staunch

Adjective

 * 1) loyal, trustworthy, reliable, outstanding
 * 2) dependable, persistent

Verb

 * 1)  To stop the flow of (blood).
 * 2)  To stop, check, or deter an action.
 * 3) * Somebody's got to staunch those press leaks!

Thesaurus
Sabbatarian, airtight, ardent, bigoted, calculable, close, committed, compact, consistent, constant, creedbound, dedicated, dependable, devoted, dogmatic, dustproof, dusttight, evangelical, faithful, faithworthy, fast, firm, firm as Gibraltar, fixed, flinty, fundamentalist, gasproof, gastight, hermetic, hermetically sealed, hidebound, hyperorthodox, immovable, inflexible, infrangible, invincible, liege, lightproof, lighttight, literalist, literalistic, long-lasting, loyal, made of iron, marble-constant, oilproof, oiltight, precisianist, precisianistic, predictable, purist, puristic, puritanical, rainproof, raintight, reliable, resolute, rigid, rugged, sealed, seaworthy, secure, set, settled, shut fast, smokeproof, smoketight, snug, solid, sot, sound, stable, steadfast, steady, steely, stormproof, stormtight, stout, straitlaced, strict, strong, sturdy, substantial, sure, surefire, tested, tight, tough, tried, tried and true, true, true-blue, trusted, trustworthy, trusty, unbending, unbreakable, undeflectable, undeviating, unfailing, unfaltering, unflappable, unflinching, unshaken, unshrinking, unswerving, unwavering, unyielding, water-repellant, waterproof, watertight, well-built, well-constructed, well-founded, well-grounded, well-made, windproof, windtight

Alternative forms

 * stanch