What does "soft" mean?

Additional senses

1. 2.3. Hence, agreeable to feel, taste, or inhale; not irritating to the tissues; as, a soft liniment; soft wines. "The soft, delicious air." Milton.
2. 3.Not harsh or offensive to the sight; not glaring; pleasing to the eye; not exciting by intensity of color or violent contrast; as, soft hues or tints. The sun, shining upon the upper part of the clouds . . . made the softest lights imaginable. Sir T. Browne.
3. 4.Not harsh or rough in sound; gentle and pleasing to the ear; flowing; as, soft whispers of music. Her voice was ever soft, Gentle, and low, -- an excellent thing in woman. Shak. Soft were my numbers; who could take offense Pope.
4. 5.Easily yielding; susceptible to influence; flexible; gentle; kind. I would to God my heart were flint, like Edward's; Or Edward's soft and pitiful, like mine. Shak. The meek or soft shall inherit the earth. Tyndale.
5. 6.Expressing gentleness, tenderness, or the like; mild; conciliatory; courteous; kind; as, soft eyes. A soft answer turneth away wrath. Prov. xv.
6. 7.A face with gladness overspread, Soft smiles, by human kindness bred. Wordsworth.
7. 8.Effeminate; not courageous or manly, weak. A longing after sensual pleasures is a dissolution of the spirit of a man, and makes it loose, soft, and wandering. Jer. Taylor.
8. 9.Gentle in action or motion; easy. On her soft axle, white she paces even, And bears thee soft with the smooth air along. Milton.
9. 10.Weak in character; impressible. The deceiver soon found this soft place of Adam's. Glanvill.
10. 11.Somewhat weak in intellect. [Colloq.] He made soft fellows stark noddies, and such as were foolish quite mad. Burton.
11. 12.Quiet; undisturbed; paceful; as, soft slumbers.
12. 13.Having, or consisting of, a gentle curve or curves; not angular or abrupt; as, soft outlines.
13. 14.Not tinged with mineral salts; adapted to decompose soap; as, soft water is the best for washing.
14. 15.(Phonetics) (a) Applied to a palatal, a sibilant, or a dental consonant (as g in gem, c in cent, etc.) as distinguished from a guttural mute (as g in go, c in cone, etc.); -- opposed to hard. (b) Belonging to the class of sonant elements as distinguished from the surd, and considered as involving less force in utterance; as, b, d, g, z, v, etc., in contrast with p, t, k, s, f, etc. Soft clam (Zoöl.), the common or long clam (Mya arenaria). See Mya. -- Soft coal, bituminous coal, as distinguished from anthracite, or hard, coal. -- Soft crab (Zoöl.), any crab which has recently shed its shell. -- Soft dorsal (Zoöl.), the posterior part of the dorsal fin of fishes when supported by soft rays. -- Soft grass. (Bot.) See Velvet grass. -- Soft money, paper money, as distinguished from coin, or hard money. [Colloq. U.S.] -- Soft mute. (Phonetics) See Media. -- Soft palate. See the Note under Palate. -- Soft ray (Zoöl.), a fin ray which is articulated and usually branched. -- Soft soap. See under Soap. -- Soft-tack, leavened bread, as distinguished from hard-tack, or ship bread. -- Soft tortoise (Zoöl.), any river tortoise of the genus Trionyx. See Trionyx.
15. 16.A soft or foolish person; an idiot. [Colloq.] G. Eliot.
16. 17.Softly; without roughness or harshness; gently; quietly. Chaucer. A knight soft riding toward them. Spenser.
17. 18.Be quiet; hold; stop; not so fast. Soft, you; a word or two before you go. Shak.