Antonyms for loose

all:

compact, tight.

indefinite, vague:

clear.

not tight; unconstrained:

constrained, restricted, tight, decent, sane, attached, connected, strict, clean, moral, hard, rigid, joined, united, definite, taut, Hindered, combined, precise, stiff.

promiscuous:

pure, purified, kind, Uncorrupt, virtuous.

noun:

consolidated, chained, fastened, undeniable, supported, incorruptible, controlled, coherent, skinny, definite, dead, Anchored, stern, responsible, confined, tied, Uncorrupt, absolute, irrefutable, bound, compressed, kidnapped, moral, correct, meticulous, gluey, fettered, bolted, restrained, uncorrupted, valid, substantiated, indisputable, choky, clenched, tight-fitting, punctilious, definable, connected, established, errorless, official, implacable, dead-on, defined, clinched, Immured, conscientious, shackled, incontestable, pure, incontrovertible, harsh, unquestionable, positive, certain, corroborated, close-packed, constrained, restricted, sure, painstaking, sound, gooey, factual, sticky, good, constipated, confirmed, unqualified, tightly fitting, indubitable, gelatinous, decisive, careful, clear-cut, honest, scrupulous, principled, validated, determined, virtuous, close-fitting, clayey, imprisoned, fine, gummy, severe, heavy, attached, enclosed, penned, cloggy, glutinous.