adj 1: marked by firm determination or resolution; not shakable;
"firm convictions"; "a firm mouth"; "steadfast
resolve"; "a man of unbendable perseverence";
"unwavering loyalty" [syn: firm, steadfast, steady, unbendable, unfaltering, unwavering]
2: without flaws or loopholes; "an ironclad contract"; "a
watertight alibi" [syn: ironclad, unassailable, watertight]