crepuscule

be dark, darken, obscure, shade; dim; tone down, lower; overcast, overshadow; eclipse; obfuscate, offuscate; obumbrate, adumbrate; cast into the shade, becloud, bedim, bedarken; cast a shade, throw a shade, spread a shade, cast a shadow, cast a gloom, throw a shadow, spread a shadow, cast gloom, throw gloom, spread gloom., extinguish; put out, blow out, snuff out; doubt.