| a silly, self-conscious smile |
| insidious cunning in attaining a goal; crafty or artful deception; duplicity. |
| attenuate | |
| —vb | |
| 1. | to weaken or become weak; reduce in size, strength, density, or value |
| 2. | to make or become thin or fine; extend |
| 3. | (tr) to make (a pathogenic bacterium, virus, etc) less virulent, as by culture in special media or exposure to heat |
| —adj | |
| 4. | diluted, weakened, slender, or reduced |
| 5. | botany tapering gradually to a point |
| [C16: from Latin attenuāre to weaken, from tenuis thin] | |
attenuate at·ten·u·ate (ə-těn'y&oomacr;-āt')
v. at·ten·u·at·ed, at·ten·u·at·ing, at·ten·u·ates
To reduce in force, value, amount, or degree; weaken; diminish.
To make bacteria or viruses less virulent.