- 2. Mute, dumb, speechless.
- 3. Taciturn
- 4. Inactive, calm, undisturbed.
- 5. Quiescent.
- 6. Dormant.
Silex, n. Silica, silicic acid, quartz, flint, oxide of silicon.
Silica, n. See Silex.
Silicic acid. See Silex.
Silicite, n. (Min.) Labradorite, Labrador spar.
Silken, a. Silky, soft.
Silkiness, n.
- 1. Smoothness, softness.
- 2. Effeminacy, pusillanimity.
Silk-weed, n. Milk-weed, wild cotton.
Silky, a. Silken.
Sill, n.
- 1. Lower piece of a frame (as of a door or a window).
- 2. Ground-sill, ground-plate.
Silliness, n. Simplicity, folly.
Silly, a.
- 1. Senseless, witless, stupid, foolish, simple, weak, childish, inept, weak-minded, brainless, shallow.
- 2. Absurd, trifling, frivolous, extravagant, preposterous, nonsensical, unwise, indiscreet, imprudent.
Silt, n. Sediment, deposit, alluvium.
Silvan, a. Woody. See Sylvan