1. Unbound; untied; unsewed; not attached, fastened, fixed, or confined; as, the loose sheets of a book. Her hair, nor loose, nor tied in formal plat. (Shak)
2. Free from constraint or obligation; not bound by duty, habit, etc.; with from or of. Now i stand loose of my vow; but who knows Cato’s thoughts ? (Addison)
3. Not tight or close; as, a loose garment.
4. Not dense, close, compact, or crowded; as, a cloth of loose texture. With horse and chariots ranked in loose array. (Milton)
5. Not precise or exact; vague; indeterminate; as, a loose style, or way of reasoning. The comparison employed . . . Must be considered rather as a loose analogy than as an exact scientific explanation. (Whewel)
6. Not strict in matters of morality; not rigid according to some standard of right. The loose morality which he had learned. (Sir W. Scott)
7. Unconnected; rambling. Vario spends whole mornings in running over loose and unconnected pages. (i. Watts)
8. Lax; not costive; having lax bowels.
9. Dissolute; unchaste; as, a loose man or woman. Loose ladies in delight. (Spenser)
10. Containing or consisting of obscene or unchaste language; as, a loose epistle. at loose ends, not in order; in confusion; carelessly managed. Fast and loose. See fast. To break loose. See break. Loose pulley.
(Science: machinery) see fast and loose pulleys, under fast. To let loose, to free from restraint or confinement; to set at liberty.
Origin: oe. Loos, lous, laus, Icel. Lauss; akin to od. Loos, D. Los, as. Leas false, deceitful, g. Los, loose, dan. & Sw. Los, goth. Laus, and E. Lose. See lose, and cf. Leasing falsehood.
Source: Websters dictionary