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.

Paraphrases for Loose:

• Adjective :
  -cool, accommodating, adaptable, additional, agile, ambiguous, ample, approximate, blurred, blurry, broad, broad-based, bulk, casual, clear, comfortable, complacent, comprehensive, conducive, confused, confusing, convenient, cool, cordon, cowardly, crazy, defective, detachable, detail, detailed, diffuse, dim, discrete, dispersed, distant, drop, easy, elusive, established, estimated, evasive, expansive, extensive, faint, far-reaching, faulty, favourable, feeble, flex, flexible, fluid, foolish, forfeited, foul, fragile, fragmented, free-flowing, free-living, free-ranging, freelance, fugitive, fuzzy, generous, getaway, grainy, grey, hay, hazy, hopeless, ill-defined, immobile, immune, imprecise, in-kind, inadequate, indefinite, indeterminate, individual, inflexible, insane, IOST, isolated, jean-luc, large, last, latest, latitudinarian, latter, lax, leakage, Learnt, lenient, Les, liable, liberal, likely, limp, little, live, loosen, lose, losin, losing, lost, low, mad, mindful, motile, movable, nature, neat, nice, nimble, non-specific, nuts, obscure, odd, odd-job, offshore, open-source, operable, permissive, personal, pine, pliable, poor, problem, proximate, random, relax, relaxed, relaxing, remaining, removable, retail, rigid, rolling, rough, scattered, scrambled, seamless, Seconded, secondment, separate, sketchy, slack, slow, sluggish, small, smooth, sole, solitary, spacious, sparse, spineless, stand-alone, stray, strict, stringent, supple, sweet, tenuous, tight, transportable, umbilical, uncertain, unclear, unconsolidated, unfettered, unhindered, unimpeded, unoccupied, unresolved, vacant, vague, vast, versatile, vulnerable, wave, weak, wide-ranging, widespread, wild, woolly, yellow.
• Adverb :
  astray, away, calm, calmly, down, links, loosely, loosen, lose, maybe, out, perhaps, possibly, quiet, quietly, relax, tight, unscrew, wild.
• Interjection :
  -go, heave, hike, light.
• Proper noun, singular :
  cigarette, cover, drop, flex, flexible, Les, movable, released, versatile.
• Verb, base form :
  abandon, blow, break, decline, drop, fail, follow, fool, forfeit, forget, give, IOSE, IOST, keep, kill, leave, let, loosen, lose, lost, miss, outof, outta, overlook, put, quit, release, relinquish, remove, spend, stop, throw, unscrew, waste.